16931078464 has 56 divisors (see below), whose sum is σ = 36330940800. Its totient is φ = 7798020096.

The previous prime is 16931078431. The next prime is 16931078501. The reversal of 16931078464 is 46487013961.

It is a super-2 number, since 2×16931078464² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114414 + ... + 216685.

It is an arithmetic number, because the mean of its divisors is an integer number (648766800).

Almost surely, 2^16931078464 is an apocalyptic number.

It is an amenable number.

16931078464 is an abundant number, since it is smaller than the sum of its proper divisors (19399862336).

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

16931078464 is a wasteful number, since it uses less digits than its factorization.

16931078464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331175 (or 331165 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 16931078464 in words is "sixteen billion, nine hundred thirty-one million, seventy-eight thousand, four hundred sixty-four".