165256450132 has 24 divisors (see below), whose sum is σ = 289516265192. Its totient is φ = 82537574400.

The previous prime is 165256450111. The next prime is 165256450181. The reversal of 165256450132 is 231054652561.

It can be written as a sum of positive squares in 4 ways, for example, as 707772816 + 164548677316 = 26604^2 + 405646^2 .

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, 16081348 + ... + 16091620.

Almost surely, 2^165256450132 is an apocalyptic number.

It is an amenable number.

165256450132 is a deficient number, since it is larger than the sum of its proper divisors (124259815060).

165256450132 is a wasteful number, since it uses less digits than its factorization.

165256450132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14299 (or 14297 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 165256450132 in words is "one hundred sixty-five billion, two hundred fifty-six million, four hundred fifty thousand, one hundred thirty-two".