165045636660461 has 16 divisors (see below), whose sum is σ = 172591671020544. Its totient is φ = 157530707647104.

The previous prime is 165045636660329. The next prime is 165045636660491. The reversal of 165045636660461 is 164066636540561.

It is a de Polignac number, because none of the positive numbers 2^k-165045636660461 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165045636660461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165045636660491) 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, 24920201 + ... + 30840033.

It is an arithmetic number, because the mean of its divisors is an integer number (10786979438784).

Almost surely, 2^{165045636660461} is an apocalyptic number.

It is an amenable number.

165045636660461 is a deficient number, since it is larger than the sum of its proper divisors (7546034360083).

165045636660461 is a wasteful number, since it uses less digits than its factorization.

165045636660461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5922460.

The product of its (nonzero) digits is 55987200, while the sum is 59.

The spelling of 165045636660461 in words is "one hundred sixty-five trillion, forty-five billion, six hundred thirty-six million, six hundred sixty thousand, four hundred sixty-one".