165756373497 has 96 divisors (see below), whose sum is σ = 290912993280. Its totient is φ = 89606424960.

The previous prime is 165756373477. The next prime is 165756373529. The reversal of 165756373497 is 794373657561.

165756373497 is a `hidden beast` number, since 1 + 6 + 5 + 75 + 6 + 3 + 73 + 497 = 666.

It is not a de Polignac number, because 165756373497 - 2²⁰ = 165755324921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165756373477) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4761288 + ... + 4795974.

It is an arithmetic number, because the mean of its divisors is an integer number (3030343680).

Almost surely, 2^165756373497 is an apocalyptic number.

It is an amenable number.

165756373497 is a deficient number, since it is larger than the sum of its proper divisors (125156619783).

165756373497 is a wasteful number, since it uses less digits than its factorization.

165756373497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34843 (or 34840 counting only the distinct ones).

The product of its digits is 100018800, while the sum is 63.

The spelling of 165756373497 in words is "one hundred sixty-five billion, seven hundred fifty-six million, three hundred seventy-three thousand, four hundred ninety-seven".