31768638944 has 36 divisors (see below), whose sum is σ = 71485440264. Its totient is φ = 13613987712.

The previous prime is 31768638919. The next prime is 31768638953. The reversal of 31768638944 is 44983686713.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2661662 + ... + 2673570.

It is an arithmetic number, because the mean of its divisors is an integer number (1985706674).

Almost surely, 2^31768638944 is an apocalyptic number.

It is an amenable number.

31768638944 is an abundant number, since it is smaller than the sum of its proper divisors (39716801320).

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

31768638944 is an frugal number, since it uses more digits than its factorization.

31768638944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23835 (or 11918 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 59.

The spelling of 31768638944 in words is "thirty-one billion, seven hundred sixty-eight million, six hundred thirty-eight thousand, nine hundred forty-four".