16657992808 has 8 divisors (see below), whose sum is σ = 31233736530. Its totient is φ = 8328996400.

The previous prime is 16657992761. The next prime is 16657992823. The reversal of 16657992808 is 80829975661.

It can be written as a sum of positive squares in only one way, i.e., 15376496004 + 1281496804 = 124002^2 + 35798^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1041124543 + ... + 1041124558.

Almost surely, 2^16657992808 is an apocalyptic number.

It is an amenable number.

16657992808 is a deficient number, since it is larger than the sum of its proper divisors (14575743722).

16657992808 is a wasteful number, since it uses less digits than its factorization.

16657992808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082249107 (or 2082249103 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 16657992808 in words is "sixteen billion, six hundred fifty-seven million, nine hundred ninety-two thousand, eight hundred eight".