81276832952 has 32 divisors (see below), whose sum is σ = 174179802720. Its totient is φ = 34829896320.

The previous prime is 81276832943. The next prime is 81276832961. The reversal of 81276832952 is 25923867218.

It is an interprime number because it is at equal distance from previous prime (81276832943) and next prime (81276832961).

It is a junction number, because it is equal to n+sod(n) for n = 81276832894 and 81276832903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658958 + ... + 772514.

It is an arithmetic number, because the mean of its divisors is an integer number (5443118835).

Almost surely, 2^81276832952 is an apocalyptic number.

It is an amenable number.

81276832952 is an abundant number, since it is smaller than the sum of its proper divisors (92902969768).

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

81276832952 is a wasteful number, since it uses less digits than its factorization.

81276832952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126351 (or 126347 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 53.

The spelling of 81276832952 in words is "eighty-one billion, two hundred seventy-six million, eight hundred thirty-two thousand, nine hundred fifty-two".