161605662015227 has 8 divisors (see below), whose sum is σ = 162087914074800. Its totient is φ = 161123519662560.

The previous prime is 161605662015211. The next prime is 161605662015313. The reversal of 161605662015227 is 722510266506161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161605662015227 - 2⁴ = 161605662015211 is a prime.

It is a super-2 number, since 2×161605662015227² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161605662015827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24475724 + ... + 30368937.

It is an arithmetic number, because the mean of its divisors is an integer number (20260989259350).

Almost surely, 2^{161605662015227} is an apocalyptic number.

161605662015227 is a deficient number, since it is larger than the sum of its proper divisors (482252059573).

161605662015227 is an equidigital number, since it uses as much as digits as its factorization.

161605662015227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54853453.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 161605662015227 in words is "one hundred sixty-one trillion, six hundred five billion, six hundred sixty-two million, fifteen thousand, two hundred twenty-seven".