165958261116373 has 64 divisors (see below), whose sum is σ = 187895336912640. Its totient is φ = 145271166566400.

The previous prime is 165958261116343. The next prime is 165958261116379. The reversal of 165958261116373 is 373611162859561.

It is a cyclic number.

It is not a de Polignac number, because 165958261116373 - 2³³ = 165949671181781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165958261116379) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33132012093 + ... + 33132017101.

It is an arithmetic number, because the mean of its divisors is an integer number (2935864639260).

Almost surely, 2^{165958261116373} is an apocalyptic number.

It is an amenable number.

165958261116373 is a deficient number, since it is larger than the sum of its proper divisors (21937075796267).

165958261116373 is a wasteful number, since it uses less digits than its factorization.

165958261116373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7798.

The product of its digits is 48988800, while the sum is 64.

The spelling of 165958261116373 in words is "one hundred sixty-five trillion, nine hundred fifty-eight billion, two hundred sixty-one million, one hundred sixteen thousand, three hundred seventy-three".