81486012132 has 72 divisors (see below), whose sum is σ = 238383891200. Its totient is φ = 22987006848.

The previous prime is 81486012121. The next prime is 81486012163. The reversal of 81486012132 is 23121068418.

81486012132 is a `hidden beast` number, since 8 + 1 + 48 + 601 + 2 + 1 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2026657 + ... + 2066472.

Almost surely, 2^81486012132 is an apocalyptic number.

It is an amenable number.

81486012132 is an abundant number, since it is smaller than the sum of its proper divisors (156897879068).

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

81486012132 is a wasteful number, since it uses less digits than its factorization.

81486012132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4093225 (or 4093220 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 81486012132 in words is "eighty-one billion, four hundred eighty-six million, twelve thousand, one hundred thirty-two".