165115265126615 has 16 divisors (see below), whose sum is σ = 199151685115200. Its totient is φ = 131416752107520.

The previous prime is 165115265126611. The next prime is 165115265126723. The reversal of 165115265126615 is 516621562511561.

It is not a de Polignac number, because 165115265126615 - 2² = 165115265126611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165115265126611) 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, 3836567 + ... + 18572823.

It is an arithmetic number, because the mean of its divisors is an integer number (12446980319700).

Almost surely, 2^{165115265126615} is an apocalyptic number.

165115265126615 is a deficient number, since it is larger than the sum of its proper divisors (34036419988585).

165115265126615 is a wasteful number, since it uses less digits than its factorization.

165115265126615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14747722.

The product of its digits is 3240000, while the sum is 53.

The spelling of 165115265126615 in words is "one hundred sixty-five trillion, one hundred fifteen billion, two hundred sixty-five million, one hundred twenty-six thousand, six hundred fifteen".