165956651022 has 16 divisors (see below), whose sum is σ = 331917368832. Its totient is φ = 55318205880.

The previous prime is 165956650991. The next prime is 165956651071. The reversal of 165956651022 is 220156659561.

It is a super-2 number, since 2×165956651022² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 720993 + ... + 922899.

It is an arithmetic number, because the mean of its divisors is an integer number (20744835552).

Almost surely, 2^165956651022 is an apocalyptic number.

165956651022 is an abundant number, since it is smaller than the sum of its proper divisors (165960717810).

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

165956651022 is a wasteful number, since it uses less digits than its factorization.

165956651022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338903.

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 165956651022 in words is "one hundred sixty-five billion, nine hundred fifty-six million, six hundred fifty-one thousand, twenty-two".