31968161568 has 96 divisors (see below), whose sum is σ = 106560558720. Its totient is φ = 9133758720.

The previous prime is 31968161557. The next prime is 31968161591. The reversal of 31968161568 is 86516186913.

31968161568 is a `hidden beast` number, since 3 + 1 + 9 + 68 + 16 + 1 + 568 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2636823 + ... + 2648918.

It is an arithmetic number, because the mean of its divisors is an integer number (1110005820).

Almost surely, 2^31968161568 is an apocalyptic number.

It is an amenable number.

31968161568 is an abundant number, since it is smaller than the sum of its proper divisors (74592397152).

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

31968161568 is a wasteful number, since it uses less digits than its factorization.

31968161568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5285767 (or 5285753 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The spelling of 31968161568 in words is "thirty-one billion, nine hundred sixty-eight million, one hundred sixty-one thousand, five hundred sixty-eight".