12076172556161 has 16 divisors (see below), whose sum is σ = 13855464931584. Its totient is φ = 10310413860864.

The previous prime is 12076172556157. The next prime is 12076172556199. The reversal of 12076172556161 is 16165527167021.

It is a cyclic number.

It is not a de Polignac number, because 12076172556161 - 2² = 12076172556157 is a prime.

It is a super-2 number, since 2×12076172556161² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12076172556131) 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, 73502441 + ... + 73666553.

It is an arithmetic number, because the mean of its divisors is an integer number (865966558224).

Almost surely, 2^{12076172556161} is an apocalyptic number.

It is an amenable number.

12076172556161 is a deficient number, since it is larger than the sum of its proper divisors (1779292375423).

12076172556161 is a wasteful number, since it uses less digits than its factorization.

12076172556161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205280.

The product of its (nonzero) digits is 1058400, while the sum is 50.

The spelling of 12076172556161 in words is "twelve trillion, seventy-six billion, one hundred seventy-two million, five hundred fifty-six thousand, one hundred sixty-one".