165166065060565 has 32 divisors (see below), whose sum is σ = 202789565280000. Its totient is φ = 129101421385728.

The previous prime is 165166065060541. The next prime is 165166065060583. The reversal of 165166065060565 is 565060560661561.

165166065060565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165166065060565 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53022687 + ... + 56051203.

It is an arithmetic number, because the mean of its divisors is an integer number (6337173915000).

Almost surely, 2^{165166065060565} is an apocalyptic number.

It is an amenable number.

165166065060565 is a deficient number, since it is larger than the sum of its proper divisors (37623500219435).

165166065060565 is a wasteful number, since it uses less digits than its factorization.

165166065060565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3029709.

The product of its (nonzero) digits is 29160000, while the sum is 58.

The spelling of 165166065060565 in words is "one hundred sixty-five trillion, one hundred sixty-six billion, sixty-five million, sixty thousand, five hundred sixty-five".