80931495843 has 32 divisors (see below), whose sum is σ = 133988601600. Its totient is φ = 47853057600.

The previous prime is 80931495823. The next prime is 80931495851. The reversal of 80931495843 is 34859413908.

80931495843 is a `hidden beast` number, since 80 + 9 + 31 + 495 + 8 + 43 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-80931495843 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 80931495843.

It is not an unprimeable number, because it can be changed into a prime (80931495823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3310953 + ... + 3335306.

It is an arithmetic number, because the mean of its divisors is an integer number (4187143800).

Almost surely, 2^80931495843 is an apocalyptic number.

80931495843 is a deficient number, since it is larger than the sum of its proper divisors (53057105757).

80931495843 is a wasteful number, since it uses less digits than its factorization.

80931495843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6646320 (or 6646314 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 80931495843 in words is "eighty billion, nine hundred thirty-one million, four hundred ninety-five thousand, eight hundred forty-three".