75791666165 has 8 divisors (see below), whose sum is σ = 90956735160. Its totient is φ = 60628842432.

The previous prime is 75791666123. The next prime is 75791666177. The reversal of 75791666165 is 56166619757.

It can be written as a sum of positive squares in 4 ways, for example, as 37860598084 + 37931068081 = 194578^2 + 194759^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75791666165 - 2¹⁰ = 75791665141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486134 + ... + 622823.

It is an arithmetic number, because the mean of its divisors is an integer number (11369591895).

Almost surely, 2^75791666165 is an apocalyptic number.

It is an amenable number.

75791666165 is a deficient number, since it is larger than the sum of its proper divisors (15165068995).

75791666165 is a wasteful number, since it uses less digits than its factorization.

75791666165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122631.

The product of its digits is 14288400, while the sum is 59.

The spelling of 75791666165 in words is "seventy-five billion, seven hundred ninety-one million, six hundred sixty-six thousand, one hundred sixty-five".