31437641664 has 168 divisors, whose sum is σ = 105864154032. Its totient is φ = 8793722880.

The previous prime is 31437641647. The next prime is 31437641687. The reversal of 31437641664 is 46614673413.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108469 + ... + 273204.

It is an arithmetic number, because the mean of its divisors is an integer number (630143774).

Almost surely, 2^31437641664 is an apocalyptic number.

It is an amenable number.

31437641664 is an abundant number, since it is smaller than the sum of its proper divisors (74426512368).

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

31437641664 is a wasteful number, since it uses less digits than its factorization.

31437641664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381715 (or 381702 counting only the distinct ones).

The product of its digits is 870912, while the sum is 45.

The spelling of 31437641664 in words is "thirty-one billion, four hundred thirty-seven million, six hundred forty-one thousand, six hundred sixty-four".