16639125168 has 20 divisors (see below), whose sum is σ = 42984406808. Its totient is φ = 5546375040.

The previous prime is 16639125149. The next prime is 16639125179. The reversal of 16639125168 is 86152193661.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 346648441 = 16639125168 / (1 + 6 + 6 + 3 + 9 + 1 + 2 + 5 + 1 + 6 + 8).

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, 173324173 + ... + 173324268.

Almost surely, 2^16639125168 is an apocalyptic number.

It is an amenable number.

16639125168 is an abundant number, since it is smaller than the sum of its proper divisors (26345281640).

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

16639125168 is a wasteful number, since it uses less digits than its factorization.

16639125168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346648452 (or 346648446 counting only the distinct ones).

The product of its digits is 466560, while the sum is 48.

The spelling of 16639125168 in words is "sixteen billion, six hundred thirty-nine million, one hundred twenty-five thousand, one hundred sixty-eight".