16961538864 has 20 divisors (see below), whose sum is σ = 43817308856. Its totient is φ = 5653846272.

The previous prime is 16961538859. The next prime is 16961538871. The reversal of 16961538864 is 46883516961.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176682649 + ... + 176682744.

Almost surely, 2^16961538864 is an apocalyptic number.

It is an amenable number.

16961538864 is an abundant number, since it is smaller than the sum of its proper divisors (26855769992).

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

16961538864 is a wasteful number, since it uses less digits than its factorization.

16961538864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353365404 (or 353365398 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 57.

The spelling of 16961538864 in words is "sixteen billion, nine hundred sixty-one million, five hundred thirty-eight thousand, eight hundred sixty-four".