165492505723 has 2 divisors, whose sum is σ = 165492505724. Its totient is φ = 165492505722.

The previous prime is 165492505687. The next prime is 165492505769. The reversal of 165492505723 is 327505294561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165492505723 - 2³³ = 156902571131 is a prime.

It is not a weakly prime, because it can be changed into another prime (165492505823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82746252861 + 82746252862.

It is an arithmetic number, because the mean of its divisors is an integer number (82746252862).

Almost surely, 2^165492505723 is an apocalyptic number.

165492505723 is a deficient number, since it is larger than the sum of its proper divisors (1).

165492505723 is an equidigital number, since it uses as much as digits as its factorization.

165492505723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268000, while the sum is 49.

The spelling of 165492505723 in words is "one hundred sixty-five billion, four hundred ninety-two million, five hundred five thousand, seven hundred twenty-three".