165615506633013 has 16 divisors (see below), whose sum is σ = 221953794296256. Its totient is φ = 109843839987840.

The previous prime is 165615506632987. The next prime is 165615506633023. The reversal of 165615506633013 is 310336605516561.

It is not a de Polignac number, because 165615506633013 - 2²⁴ = 165615489855797 is a prime.

It is a super-2 number, since 2×165615506633013² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165615506633023) 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, 3068745 + ... + 18456657.

It is an arithmetic number, because the mean of its divisors is an integer number (13872112143516).

Almost surely, 2^{165615506633013} is an apocalyptic number.

It is an amenable number.

165615506633013 is a deficient number, since it is larger than the sum of its proper divisors (56338287663243).

165615506633013 is a wasteful number, since it uses less digits than its factorization.

165615506633013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15406324.

The product of its (nonzero) digits is 4374000, while the sum is 51.

The spelling of 165615506633013 in words is "one hundred sixty-five trillion, six hundred fifteen billion, five hundred six million, six hundred thirty-three thousand, thirteen".