12566634325116 has 24 divisors (see below), whose sum is σ = 29453636212224. Its totient is φ = 4170093900720.

The previous prime is 12566634325111. The next prime is 12566634325123. The reversal of 12566634325116 is 61152343666521.

It is a happy number.

It is a super-2 number, since 2×12566634325116² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12566634325111) 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, 2348023170 + ... + 2348028521.

It is an arithmetic number, because the mean of its divisors is an integer number (1227234842176).

Almost surely, 2^{12566634325116} is an apocalyptic number.

It is an amenable number.

12566634325116 is an abundant number, since it is smaller than the sum of its proper divisors (16887001887108).

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

12566634325116 is a wasteful number, since it uses less digits than its factorization.

12566634325116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4696051921 (or 4696051919 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 51.

The spelling of 12566634325116 in words is "twelve trillion, five hundred sixty-six billion, six hundred thirty-four million, three hundred twenty-five thousand, one hundred sixteen".