16640773664 has 24 divisors (see below), whose sum is σ = 32944559760. Its totient is φ = 8273901376.

The previous prime is 16640773657. The next prime is 16640773687. The reversal of 16640773664 is 46637704661.

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, 1446854 + ... + 1458309.

It is an arithmetic number, because the mean of its divisors is an integer number (1372689990).

Almost surely, 2^16640773664 is an apocalyptic number.

It is an amenable number.

16640773664 is a deficient number, since it is larger than the sum of its proper divisors (16303786096).

16640773664 is a wasteful number, since it uses less digits than its factorization.

16640773664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905352 (or 2905344 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 50.

The spelling of 16640773664 in words is "sixteen billion, six hundred forty million, seven hundred seventy-three thousand, six hundred sixty-four".