165425828911 has 4 divisors (see below), whose sum is σ = 189058090192. Its totient is φ = 141793567632.

The previous prime is 165425828879. The next prime is 165425828951. The reversal of 165425828911 is 119828524561.

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

It is a cyclic number.

It is not a de Polignac number, because 165425828911 - 2⁵ = 165425828879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165425828951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11816130630 + ... + 11816130643.

It is an arithmetic number, because the mean of its divisors is an integer number (47264522548).

Almost surely, 2^165425828911 is an apocalyptic number.

165425828911 is a deficient number, since it is larger than the sum of its proper divisors (23632261281).

165425828911 is an equidigital number, since it uses as much as digits as its factorization.

165425828911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23632261280.

The product of its digits is 1382400, while the sum is 52.

The spelling of 165425828911 in words is "one hundred sixty-five billion, four hundred twenty-five million, eight hundred twenty-eight thousand, nine hundred eleven".