12161717976 has 32 divisors (see below), whose sum is σ = 30411993600. Its totient is φ = 4052879520.

The previous prime is 12161717969. The next prime is 12161718001. The reversal of 12161717976 is 67971716121.

12161717976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35781 + ... + 160011.

It is an arithmetic number, because the mean of its divisors is an integer number (950374800).

Almost surely, 2^12161717976 is an apocalyptic number.

It is an amenable number.

12161717976 is an abundant number, since it is smaller than the sum of its proper divisors (18250275624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12161717976 is a wasteful number, since it uses less digits than its factorization.

12161717976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128319 (or 128315 counting only the distinct ones).

The product of its digits is 222264, while the sum is 48.

The spelling of 12161717976 in words is "twelve billion, one hundred sixty-one million, seven hundred seventeen thousand, nine hundred seventy-six".