31655646466972 has 48 divisors (see below), whose sum is σ = 60457780795104. Its totient is φ = 14383152000000.

The previous prime is 31655646466919. The next prime is 31655646466973. The reversal of 31655646466972 is 27966464655613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31655646466973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1665989472 + ... + 1666008472.

It is an arithmetic number, because the mean of its divisors is an integer number (1259537099898).

Almost surely, 2^{31655646466972} is an apocalyptic number.

It is an amenable number.

31655646466972 is a deficient number, since it is larger than the sum of its proper divisors (28802134328132).

31655646466972 is a wasteful number, since it uses less digits than its factorization.

31655646466972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32230 (or 32228 counting only the distinct ones).

The product of its digits is 1175731200, while the sum is 70.

The spelling of 31655646466972 in words is "thirty-one trillion, six hundred fifty-five billion, six hundred forty-six million, four hundred sixty-six thousand, nine hundred seventy-two".