165765249495 has 32 divisors (see below), whose sum is σ = 297014231040. Its totient is φ = 87711996960.

The previous prime is 165765249491. The next prime is 165765249521. The reversal of 165765249495 is 594942567561.

165765249495 is a `hidden beast` number, since 1 + 6 + 5 + 7 + 6 + 52 + 494 + 95 = 666.

It is not a de Polignac number, because 165765249495 - 2² = 165765249491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165765249491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4817071 + ... + 4851360.

It is an arithmetic number, because the mean of its divisors is an integer number (9281694720).

Almost surely, 2^165765249495 is an apocalyptic number.

165765249495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165765249495 is a deficient number, since it is larger than the sum of its proper divisors (131248981545).

165765249495 is a wasteful number, since it uses less digits than its factorization.

165765249495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9668572 (or 9668566 counting only the distinct ones).

The product of its digits is 81648000, while the sum is 63.

The spelling of 165765249495 in words is "one hundred sixty-five billion, seven hundred sixty-five million, two hundred forty-nine thousand, four hundred ninety-five".