165120426225500 has 24 divisors (see below), whose sum is σ = 360623010877584. Its totient is φ = 66048170490000.

The previous prime is 165120426225481. The next prime is 165120426225551. The reversal of 165120426225500 is 5522624021561.

165120426225500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 165120425726 + ... + 165120426725.

It is an arithmetic number, because the mean of its divisors is an integer number (15025958786566).

Almost surely, 2^{165120426225500} is an apocalyptic number.

165120426225500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165120426225500 is an abundant number, since it is smaller than the sum of its proper divisors (195502584652084).

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

165120426225500 is a wasteful number, since it uses less digits than its factorization.

165120426225500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330240852470 (or 330240852458 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 165120426225500 in words is "one hundred sixty-five trillion, one hundred twenty billion, four hundred twenty-six million, two hundred twenty-five thousand, five hundred".