16923893768 has 8 divisors (see below), whose sum is σ = 31732300830. Its totient is φ = 8461946880.

The previous prime is 16923893759. The next prime is 16923893773. The reversal of 16923893768 is 86739832961.

It can be written as a sum of positive squares in only one way, i.e., 14596989124 + 2326904644 = 120818^2 + 48238^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 16923893768.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057743353 + ... + 1057743368.

Almost surely, 2^16923893768 is an apocalyptic number.

It is an amenable number.

16923893768 is a deficient number, since it is larger than the sum of its proper divisors (14808407062).

16923893768 is a wasteful number, since it uses less digits than its factorization.

16923893768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115486727 (or 2115486723 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 62.

The spelling of 16923893768 in words is "sixteen billion, nine hundred twenty-three million, eight hundred ninety-three thousand, seven hundred sixty-eight".