165224519139 has 4 divisors (see below), whose sum is σ = 220299358856. Its totient is φ = 110149679424.

The previous prime is 165224519093. The next prime is 165224519153. The reversal of 165224519139 is 931915422561.

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

It is not a de Polignac number, because 165224519139 - 2⁸ = 165224518883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165224519179) 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, 27537419854 + ... + 27537419859.

It is an arithmetic number, because the mean of its divisors is an integer number (55074839714).

Almost surely, 2^165224519139 is an apocalyptic number.

165224519139 is a deficient number, since it is larger than the sum of its proper divisors (55074839717).

165224519139 is an equidigital number, since it uses as much as digits as its factorization.

165224519139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55074839716.

The product of its digits is 583200, while the sum is 48.

The spelling of 165224519139 in words is "one hundred sixty-five billion, two hundred twenty-four million, five hundred nineteen thousand, one hundred thirty-nine".