165251538112 has 14 divisors (see below), whose sum is σ = 327921021068. Its totient is φ = 82625769024.

The previous prime is 165251538107. The next prime is 165251538233. The reversal of 165251538112 is 211835152561.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1291027578 + ... + 1291027705.

Almost surely, 2^165251538112 is an apocalyptic number.

It is an amenable number.

165251538112 is a deficient number, since it is larger than the sum of its proper divisors (162669482956).

165251538112 is an equidigital number, since it uses as much as digits as its factorization.

165251538112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582055295 (or 2582055285 counting only the distinct ones).

The product of its digits is 72000, while the sum is 40.

The spelling of 165251538112 in words is "one hundred sixty-five billion, two hundred fifty-one million, five hundred thirty-eight thousand, one hundred twelve".