165226656120 has 64 divisors (see below), whose sum is σ = 495823213440. Its totient is φ = 44047708800.

The previous prime is 165226656097. The next prime is 165226656151. The reversal of 165226656120 is 21656622561.

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 15 ways as a sum of consecutive naturals, for example, 221715 + ... + 616125.

It is an arithmetic number, because the mean of its divisors is an integer number (7747237710).

Almost surely, 2^165226656120 is an apocalyptic number.

165226656120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165226656120 is an abundant number, since it is smaller than the sum of its proper divisors (330596557320).

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

165226656120 is a wasteful number, since it uses less digits than its factorization.

165226656120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397916 (or 397912 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 165226656120 in words is "one hundred sixty-five billion, two hundred twenty-six million, six hundred fifty-six thousand, one hundred twenty".