165151166565015 has 48 divisors (see below), whose sum is σ = 286393917360096. Its totient is φ = 88040043168000.

The previous prime is 165151166564983. The next prime is 165151166565041. The reversal of 165151166565015 is 510565661151561.

165151166565015 is a `hidden beast` number, since 1 + 6 + 5 + 1 + 5 + 1 + 1 + 66 + 565 + 0 + 15 = 666.

It is not a de Polignac number, because 165151166565015 - 2⁵ = 165151166564983 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2769986905 + ... + 2770046525.

It is an arithmetic number, because the mean of its divisors is an integer number (5966539945002).

Almost surely, 2^{165151166565015} is an apocalyptic number.

165151166565015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165151166565015 is a deficient number, since it is larger than the sum of its proper divisors (121242750795081).

165151166565015 is a wasteful number, since it uses less digits than its factorization.

165151166565015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86960 (or 86957 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 54.

The spelling of 165151166565015 in words is "one hundred sixty-five trillion, one hundred fifty-one billion, one hundred sixty-six million, five hundred sixty-five thousand, fifteen".