80856412045920 has 432 divisors, whose sum is σ = 331324993254528. Its totient is φ = 17885288816640.

The previous prime is 80856412045847. The next prime is 80856412045931. The reversal of 80856412045920 is 2954021465808.

80856412045920 is a `hidden beast` number, since 8 + 0 + 8 + 5 + 6 + 41 + 2 + 0 + 4 + 592 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 16295289 + ... + 20670008.

It is an arithmetic number, because the mean of its divisors is an integer number (766956002904).

Almost surely, 2^{80856412045920} is an apocalyptic number.

80856412045920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80856412045920 is an abundant number, since it is smaller than the sum of its proper divisors (250468581208608).

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

80856412045920 is a wasteful number, since it uses less digits than its factorization.

80856412045920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36965363 (or 36965345 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 80856412045920 in words is "eighty trillion, eight hundred fifty-six billion, four hundred twelve million, forty-five thousand, nine hundred twenty".