16657663984 has 40 divisors (see below), whose sum is σ = 34766750480. Its totient is φ = 7685964288.

The previous prime is 16657663961. The next prime is 16657663993. The reversal of 16657663984 is 48936675661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 893284 + ... + 911740.

It is an arithmetic number, because the mean of its divisors is an integer number (869168762).

Almost surely, 2^16657663984 is an apocalyptic number.

It is an amenable number.

16657663984 is an abundant number, since it is smaller than the sum of its proper divisors (18109086496).

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

16657663984 is a wasteful number, since it uses less digits than its factorization.

16657663984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22817 (or 22811 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 61.

The spelling of 16657663984 in words is "sixteen billion, six hundred fifty-seven million, six hundred sixty-three thousand, nine hundred eighty-four".