165490132179 has 4 divisors (see below), whose sum is σ = 220653509576. Its totient is φ = 110326754784.

The previous prime is 165490132147. The next prime is 165490132277. The reversal of 165490132179 is 971231094561.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 165490132179 - 2⁵ = 165490132147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165490132139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27581688694 + ... + 27581688699.

It is an arithmetic number, because the mean of its divisors is an integer number (55163377394).

Almost surely, 2^165490132179 is an apocalyptic number.

165490132179 is a deficient number, since it is larger than the sum of its proper divisors (55163377397).

165490132179 is an equidigital number, since it uses as much as digits as its factorization.

165490132179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55163377396.

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 165490132179 in words is "one hundred sixty-five billion, four hundred ninety million, one hundred thirty-two thousand, one hundred seventy-nine".