165220501622052 has 24 divisors (see below), whose sum is σ = 402276003950016. Its totient is φ = 52679000517088.

The previous prime is 165220501622003. The next prime is 165220501622087. The reversal of 165220501622052 is 250226105022561.

It is a self number, because there is not a number n which added to its sum of digits gives 165220501622052.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299312502663 + ... + 299312503214.

It is an arithmetic number, because the mean of its divisors is an integer number (16761500164584).

Almost surely, 2^{165220501622052} is an apocalyptic number.

165220501622052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165220501622052 is an abundant number, since it is smaller than the sum of its proper divisors (237055502327964).

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

165220501622052 is a wasteful number, since it uses less digits than its factorization.

165220501622052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598625005907 (or 598625005905 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 165220501622052 in words is "one hundred sixty-five trillion, two hundred twenty billion, five hundred one million, six hundred twenty-two thousand, fifty-two".