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800800800080 = 24549672015303
BaseRepresentation
bin10111010011100110111…
…00100111110101010000
32211120000011222121011212
423221303130213311100
5101110020001100310
61411514404155252
7111566406330101
oct13516334476520
92746004877155
10800800800080
112896881a1746
1210b24a698b28
135a690b4c788
142aa8a85c3a8
1515c6d776205
hexba73727d50

800800800080 has 40 divisors (see below), whose sum is σ = 1862237630592. Its totient is φ = 320255671424.

The previous prime is 800800800073. The next prime is 800800800101. The reversal of 800800800080 is 80008008008.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610292 + ... + 1405011.

Almost surely, 2800800800080 is an apocalyptic number.

800800800080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

800800800080 is an abundant number, since it is smaller than the sum of its proper divisors (1061436830512).

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

800800800080 is a wasteful number, since it uses less digits than its factorization.

800800800080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020283 (or 2020277 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 32.

Adding to 800800800080 its reverse (80008008008), we get a palindrome (880808808088).

The spelling of 800800800080 in words is "eight hundred billion, eight hundred million, eight hundred thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 4967 9934 19868 24835 39736 49670 79472 99340 198680 397360 2015303 4030606 8061212 10076515 16122424 20153030 32244848 40306060 80612120 161224240 10010010001 20020020002 40040040004 50050050005 80080080008 100100100010 160160160016 200200200020 400400400040 800800800080