165445053051 has 4 divisors (see below), whose sum is σ = 220593404072. Its totient is φ = 110296702032.

The previous prime is 165445053047. The next prime is 165445053089. The reversal of 165445053051 is 150350544561.

165445053051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 165445053051 - 2² = 165445053047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165445053001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27574175506 + ... + 27574175511.

It is an arithmetic number, because the mean of its divisors is an integer number (55148351018).

Almost surely, 2^165445053051 is an apocalyptic number.

165445053051 is a deficient number, since it is larger than the sum of its proper divisors (55148351021).

165445053051 is an equidigital number, since it uses as much as digits as its factorization.

165445053051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55148351020.

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 165445053051 in words is "one hundred sixty-five billion, four hundred forty-five million, fifty-three thousand, fifty-one".