165116556150 has 192 divisors, whose sum is σ = 521366630400. Its totient is φ = 33636395520.

The previous prime is 165116556139. The next prime is 165116556203. The reversal of 165116556150 is 51655611561.

165116556150 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×165116556150² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 187291 + ... + 604409.

It is an arithmetic number, because the mean of its divisors is an integer number (2715451200).

Almost surely, 2^165116556150 is an apocalyptic number.

165116556150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 165116556150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260683315200).

165116556150 is an abundant number, since it is smaller than the sum of its proper divisors (356250074250).

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

165116556150 is a wasteful number, since it uses less digits than its factorization.

165116556150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417183 (or 417178 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 165116556150 in words is "one hundred sixty-five billion, one hundred sixteen million, five hundred fifty-six thousand, one hundred fifty".