80931495842 has 18 divisors (see below), whose sum is σ = 128969216883. Its totient is φ = 38082191232.

The previous prime is 80931495823. The next prime is 80931495851. The reversal of 80931495842 is 24859413908.

It can be written as a sum of positive squares in 5 ways, for example, as 80679289681 + 252206161 = 284041^2 + 15881^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=201161.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6833558 + ... + 6845390.

Almost surely, 2^80931495842 is an apocalyptic number.

80931495842 is a deficient number, since it is larger than the sum of its proper divisors (48037721041).

80931495842 is an frugal number, since it uses more digits than its factorization.

80931495842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23702 (or 11852 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 80931495842 in words is "eighty billion, nine hundred thirty-one million, four hundred ninety-five thousand, eight hundred forty-two".