80732108731 has 4 divisors (see below), whose sum is σ = 80733223000. Its totient is φ = 80730994464.

The previous prime is 80732108713. The next prime is 80732108761. The reversal of 80732108731 is 13780123708.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80732108731 is a prime.

It is a super-2 number, since 2×80732108731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80732108761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440286 + ... + 596083.

It is an arithmetic number, because the mean of its divisors is an integer number (20183305750).

Almost surely, 2^80732108731 is an apocalyptic number.

80732108731 is a deficient number, since it is larger than the sum of its proper divisors (1114269).

80732108731 is a wasteful number, since it uses less digits than its factorization.

80732108731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114268.

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 80732108731 in words is "eighty billion, seven hundred thirty-two million, one hundred eight thousand, seven hundred thirty-one".