165165101050051 has 4 divisors (see below), whose sum is σ = 165165678689112. Its totient is φ = 165164523410992.

The previous prime is 165165101050031. The next prime is 165165101050057. The reversal of 165165101050051 is 150050101561561.

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 165165101050051 - 2²¹ = 165165098952899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165165101050057) 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, 288390421 + ... + 288962566.

It is an arithmetic number, because the mean of its divisors is an integer number (41291419672278).

Almost surely, 2^{165165101050051} is an apocalyptic number.

165165101050051 is a deficient number, since it is larger than the sum of its proper divisors (577639061).

165165101050051 is an equidigital number, since it uses as much as digits as its factorization.

165165101050051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577639060.

The product of its (nonzero) digits is 22500, while the sum is 37.

The spelling of 165165101050051 in words is "one hundred sixty-five trillion, one hundred sixty-five billion, one hundred one million, fifty thousand, fifty-one".