16749172664 has 16 divisors (see below), whose sum is σ = 35891084400. Its totient is φ = 7178216832.

The previous prime is 16749172603. The next prime is 16749172673. The reversal of 16749172664 is 46627194761.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149546129 + ... + 149546240.

It is an arithmetic number, because the mean of its divisors is an integer number (2243192775).

Almost surely, 2^16749172664 is an apocalyptic number.

16749172664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16749172664 is an abundant number, since it is smaller than the sum of its proper divisors (19141911736).

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

16749172664 is a wasteful number, since it uses less digits than its factorization.

16749172664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299092382 (or 299092378 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 53.

The spelling of 16749172664 in words is "sixteen billion, seven hundred forty-nine million, one hundred seventy-two thousand, six hundred sixty-four".