16679205904 has 45 divisors (see below), whose sum is σ = 32794304893. Its totient is φ = 8217945536.

The previous prime is 16679205889. The next prime is 16679205943. The reversal of 16679205904 is 40950297661.

It is a happy number.

The square root of 16679205904 is 129148.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3937311504 + 12741894400 = 62748^2 + 112880^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 42876942 + ... + 42877330.

Almost surely, 2^16679205904 is an apocalyptic number.

16679205904 is the 129148-th square number.

It is an amenable number.

16679205904 is a deficient number, since it is larger than the sum of its proper divisors (16115098989).

16679205904 is an frugal number, since it uses more digits than its factorization.

16679205904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 49.

Multiplying 16679205904 by its sum of digits (49), we get a square (817281089296 = 904036²).

The spelling of 16679205904 in words is "sixteen billion, six hundred seventy-nine million, two hundred five thousand, nine hundred four".