165156454252 has 24 divisors (see below), whose sum is σ = 293902020720. Its totient is φ = 81196015680.

The previous prime is 165156454201. The next prime is 165156454301. The reversal of 165156454252 is 252454651561.

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, 1388683 + ... + 1502914.

It is an arithmetic number, because the mean of its divisors is an integer number (12245917530).

Almost surely, 2^165156454252 is an apocalyptic number.

It is an amenable number.

165156454252 is a deficient number, since it is larger than the sum of its proper divisors (128745566468).

165156454252 is a wasteful number, since it uses less digits than its factorization.

165156454252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891841 (or 2891839 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 46.

The spelling of 165156454252 in words is "one hundred sixty-five billion, one hundred fifty-six million, four hundred fifty-four thousand, two hundred fifty-two".