31660631655552 has 96 divisors (see below), whose sum is σ = 91360546056000. Its totient is φ = 10524146689536.

The previous prime is 31660631655529. The next prime is 31660631655559. The reversal of 31660631655552 is 25555613606613.

31660631655552 is a `hidden beast` number, since 3 + 1 + 6 + 6 + 0 + 6 + 31 + 6 + 55 + 552 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (31660631655559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37863852 + ... + 38690987.

It is an arithmetic number, because the mean of its divisors is an integer number (951672354750).

Almost surely, 2^{31660631655552} is an apocalyptic number.

31660631655552 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31660631655552 is an abundant number, since it is smaller than the sum of its proper divisors (59699914400448).

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

31660631655552 is a wasteful number, since it uses less digits than its factorization.

31660631655552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76555218 (or 76555203 counting only the distinct ones).

The product of its (nonzero) digits is 14580000, while the sum is 54.

The spelling of 31660631655552 in words is "thirty-one trillion, six hundred sixty billion, six hundred thirty-one million, six hundred fifty-five thousand, five hundred fifty-two".