15617151611161 has 6 divisors (see below), whose sum is σ = 16137181634586. Its totient is φ = 15113372526000.

The previous prime is 15617151611153. The next prime is 15617151611233. The reversal of 15617151611161 is 16111615171651.

It can be written as a sum of positive squares in only one way, i.e., 14291567815561 + 1325583795600 = 3780419^2 + 1151340^2 .

It is not a de Polignac number, because 15617151611161 - 2³ = 15617151611153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15617151411161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8125468140 + ... + 8125470061.

It is an arithmetic number, because the mean of its divisors is an integer number (2689530272431).

Almost surely, 2^{15617151611161} is an apocalyptic number.

It is an amenable number.

15617151611161 is a deficient number, since it is larger than the sum of its proper divisors (520030023425).

15617151611161 is an equidigital number, since it uses as much as digits as its factorization.

15617151611161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16250938263 (or 16250938232 counting only the distinct ones).

The product of its digits is 37800, while the sum is 43.

The spelling of 15617151611161 in words is "fifteen trillion, six hundred seventeen billion, one hundred fifty-one million, six hundred eleven thousand, one hundred sixty-one".