16231631808 has 84 divisors (see below), whose sum is σ = 49957844712. Its totient is φ = 4637606400.

The previous prime is 16231631803. The next prime is 16231631821. The reversal of 16231631808 is 80813613261.

It is a tau number, because it is divible by the number of its divisors (84).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16231631803) 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, 853243 + ... + 872058.

Almost surely, 2^16231631808 is an apocalyptic number.

It is an amenable number.

16231631808 is an abundant number, since it is smaller than the sum of its proper divisors (33726212904).

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

16231631808 is a wasteful number, since it uses less digits than its factorization.

16231631808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725330 (or 1725313 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 16231631808 in words is "sixteen billion, two hundred thirty-one million, six hundred thirty-one thousand, eight hundred eight".