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10078791660 = 2233572991943
BaseRepresentation
bin10010110001011111…
…00010011111101100
3222000102000122222000
421120233202133230
5131120132313120
64344035252300
7504522213150
oct113057423754
928012018860
1010078791660
114302240393
121b5344a090
13c48116862
146b87d3060
153dec73990
hex258be27ec

10078791660 has 192 divisors, whose sum is σ = 37071820800. Its totient is φ = 2224260864.

The previous prime is 10078791607. The next prime is 10078791677. The reversal of 10078791660 is 6619787001.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 63649 + ... + 155591.

It is an arithmetic number, because the mean of its divisors is an integer number (193082400).

Almost surely, 210078791660 is an apocalyptic number.

10078791660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10078791660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18535910400).

10078791660 is an abundant number, since it is smaller than the sum of its proper divisors (26993029140).

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

10078791660 is a wasteful number, since it uses less digits than its factorization.

10078791660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91997 (or 91989 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 10078791660 in words is "ten billion, seventy-eight million, seven hundred ninety-one thousand, six hundred sixty".