80157940856 has 48 divisors (see below), whose sum is σ = 175456711440. Its totient is φ = 34231102080.

The previous prime is 80157940831. The next prime is 80157940873. The reversal of 80157940856 is 65804975108.

It is a junction number, because it is equal to n+sod(n) for n = 80157940798 and 80157940807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 253700 + ... + 474003.

It is an arithmetic number, because the mean of its divisors is an integer number (3655348155).

Almost surely, 2^80157940856 is an apocalyptic number.

It is an amenable number.

80157940856 is an abundant number, since it is smaller than the sum of its proper divisors (95298770584).

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

80157940856 is a wasteful number, since it uses less digits than its factorization.

80157940856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728004 (or 727993 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 80157940856 in words is "eighty billion, one hundred fifty-seven million, nine hundred forty thousand, eight hundred fifty-six".