165055651115516 has 96 divisors (see below), whose sum is σ = 346540297334784. Its totient is φ = 67296308544000.

The previous prime is 165055651115471. The next prime is 165055651115539. The reversal of 165055651115516 is 615511156550561.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93745856 + ... + 95490296.

It is an arithmetic number, because the mean of its divisors is an integer number (3609794763904).

Almost surely, 2^{165055651115516} 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 165055651115516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173270148667392).

165055651115516 is an abundant number, since it is smaller than the sum of its proper divisors (181484646219268).

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

165055651115516 is a wasteful number, since it uses less digits than its factorization.

165055651115516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746331 (or 1746329 counting only the distinct ones).

The product of its (nonzero) digits is 3375000, while the sum is 53.

The spelling of 165055651115516 in words is "one hundred sixty-five trillion, fifty-five billion, six hundred fifty-one million, one hundred fifteen thousand, five hundred sixteen".