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10101010100080 = 245487355772889
BaseRepresentation
bin1001001011111101001100…
…0111100110111101110000
31022202122110202112222220011
42102333103013212331300
52310443332041200310
633252201234024304
72061526306131064
oct222772307467560
938678422488804
1010101010100080
1132448a5961279
121171787a18094
135836a1000403
1426cc6a3a9aa4
15127b3cba678a
hex92fd31e6f70

10101010100080 has 80 divisors (see below), whose sum is σ = 23540010932160. Its totient is φ = 4030918649856.

The previous prime is 10101010100063. The next prime is 10101010100081. The reversal of 10101010100080 is 8000101010101.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 10101010100080.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101010100081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138544276 + ... + 138617164.

It is an arithmetic number, because the mean of its divisors is an integer number (294250136652).

Almost surely, 210101010100080 is an apocalyptic number.

10101010100080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10101010100080 is an abundant number, since it is smaller than the sum of its proper divisors (13439000832080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10101010100080 is a wasteful number, since it uses less digits than its factorization.

10101010100080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76946 (or 76940 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10101010100080 its reverse (8000101010101), we get a palindrome (18101111110181).

The spelling of 10101010100080 in words is "ten trillion, one hundred one billion, ten million, one hundred thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 487 974 1948 2435 3557 3896 4870 7114 7792 9740 14228 17785 19480 28456 35570 38960 56912 71140 72889 142280 145778 284560 291556 364445 583112 728890 1166224 1457780 1732259 2915560 3464518 5831120 6929036 8661295 13858072 17322590 27716144 34645180 35496943 69290360 70993886 138580720 141987772 177484715 259266173 283975544 354969430 518532346 567951088 709938860 1037064692 1296330865 1419877720 2074129384 2592661730 2839755440 4148258768 5185323460 10370646920 20741293840 126262626251 252525252502 505050505004 631313131255 1010101010008 1262626262510 2020202020016 2525252525020 5050505050040 10101010100080