161051605660051 has 16 divisors (see below), whose sum is σ = 163414981509120. Its totient is φ = 158705605951200.

The previous prime is 161051605660019. The next prime is 161051605660109. The reversal of 161051605660051 is 150066506150161.

It is a cyclic number.

It is not a de Polignac number, because 161051605660051 - 2⁵ = 161051605660019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161051605664051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155142390 + ... + 156177028.

It is an arithmetic number, because the mean of its divisors is an integer number (10213436344320).

Almost surely, 2^{161051605660051} is an apocalyptic number.

161051605660051 is a deficient number, since it is larger than the sum of its proper divisors (2363375849069).

161051605660051 is a wasteful number, since it uses less digits than its factorization.

161051605660051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043034.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 161051605660051 in words is "one hundred sixty-one trillion, fifty-one billion, six hundred five million, six hundred sixty thousand, fifty-one".