165633665516012 has 48 divisors (see below), whose sum is σ = 306103282867200. Its totient is φ = 78203843919360.

The previous prime is 165633665515999. The next prime is 165633665516017. The reversal of 165633665516012 is 210615566336561.

It is a happy number.

It is a super-2 number, since 2×165633665516012² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (165633665516017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1527044093 + ... + 1527152555.

It is an arithmetic number, because the mean of its divisors is an integer number (6377151726400).

Almost surely, 2^{165633665516012} is an apocalyptic number.

It is an amenable number.

165633665516012 is a deficient number, since it is larger than the sum of its proper divisors (140469617351188).

165633665516012 is a wasteful number, since it uses less digits than its factorization.

165633665516012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173406 (or 173404 counting only the distinct ones).

The product of its (nonzero) digits is 17496000, while the sum is 56.

The spelling of 165633665516012 in words is "one hundred sixty-five trillion, six hundred thirty-three billion, six hundred sixty-five million, five hundred sixteen thousand, twelve".