165139663104 has 216 divisors, whose sum is σ = 539753847360. Its totient is φ = 48137711616.

The previous prime is 165139663099. The next prime is 165139663111. The reversal of 165139663104 is 401366931561.

165139663104 is a `hidden beast` number, since 1 + 6 + 5 + 1 + 3 + 9 + 6 + 631 + 0 + 4 = 666.

It is a super-2 number, since 2×165139663104² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 165139663104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 423997 + ... + 714179.

Almost surely, 2^165139663104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165139663104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269876923680).

165139663104 is an abundant number, since it is smaller than the sum of its proper divisors (374614184256).

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

165139663104 is a wasteful number, since it uses less digits than its factorization.

165139663104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290237 (or 290220 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 165139663104 in words is "one hundred sixty-five billion, one hundred thirty-nine million, six hundred sixty-three thousand, one hundred four".