80857162044 has 18 divisors (see below), whose sum is σ = 204388937480. Its totient is φ = 26952387336.

The previous prime is 80857162021. The next prime is 80857162049. The reversal of 80857162044 is 44026175808.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80857162049) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1123016104 + ... + 1123016175.

Almost surely, 2^80857162044 is an apocalyptic number.

It is an amenable number.

80857162044 is an abundant number, since it is smaller than the sum of its proper divisors (123531775436).

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

80857162044 is a wasteful number, since it uses less digits than its factorization.

80857162044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246032289 (or 2246032284 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 80857162044 in words is "eighty billion, eight hundred fifty-seven million, one hundred sixty-two thousand, forty-four".