165655060061 has 4 divisors (see below), whose sum is σ = 168127523712. Its totient is φ = 163182596412.

The previous prime is 165655060019. The next prime is 165655060093. The reversal of 165655060061 is 160060556561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 165655060061 - 2¹⁴ = 165655043677 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 (165655060261) 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, 1236231725 + ... + 1236231858.

It is an arithmetic number, because the mean of its divisors is an integer number (42031880928).

Almost surely, 2^165655060061 is an apocalyptic number.

It is an amenable number.

165655060061 is a deficient number, since it is larger than the sum of its proper divisors (2472463651).

165655060061 is an equidigital number, since it uses as much as digits as its factorization.

165655060061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472463650.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 165655060061 in words is "one hundred sixty-five billion, six hundred fifty-five million, sixty thousand, sixty-one".