16639451135164 has 72 divisors (see below), whose sum is σ = 34472405053520. Its totient is φ = 6980887203840.

The previous prime is 16639451135147. The next prime is 16639451135173. The reversal of 16639451135164 is 46153115493661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65114227 + ... + 65369269.

Almost surely, 2^{16639451135164} is an apocalyptic number.

It is an amenable number.

16639451135164 is an abundant number, since it is smaller than the sum of its proper divisors (17832953918356).

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

16639451135164 is a wasteful number, since it uses less digits than its factorization.

16639451135164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265451 (or 265438 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 55.

The spelling of 16639451135164 in words is "sixteen trillion, six hundred thirty-nine billion, four hundred fifty-one million, one hundred thirty-five thousand, one hundred sixty-four".