16431268072 has 48 divisors (see below), whose sum is σ = 31414014540. Its totient is φ = 8057069568.

The previous prime is 16431268067. The next prime is 16431268097. The reversal of 16431268072 is 27086213461.

It can be written as a sum of positive squares in 6 ways, for example, as 2543588356 + 13887679716 = 50434^2 + 117846^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8226978 + ... + 8228974.

Almost surely, 2^16431268072 is an apocalyptic number.

It is an amenable number.

16431268072 is a deficient number, since it is larger than the sum of its proper divisors (14982746468).

16431268072 is a wasteful number, since it uses less digits than its factorization.

16431268072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2342 (or 2265 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 16431268072 in words is "sixteen billion, four hundred thirty-one million, two hundred sixty-eight thousand, seventy-two".