12666115737 has 24 divisors (see below), whose sum is σ = 19963077888. Its totient is φ = 7674760800.

The previous prime is 12666115703. The next prime is 12666115739. The reversal of 12666115737 is 73751166621.

It is a de Polignac number, because none of the positive numbers 2^k-12666115737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12666115692 and 12666115701.

It is not an unprimeable number, because it can be changed into a prime (12666115739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 562263 + ... + 584355.

It is an arithmetic number, because the mean of its divisors is an integer number (831794912).

Almost surely, 2^12666115737 is an apocalyptic number.

It is an amenable number.

12666115737 is a deficient number, since it is larger than the sum of its proper divisors (7296962151).

12666115737 is a wasteful number, since it uses less digits than its factorization.

12666115737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27901 (or 27898 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The spelling of 12666115737 in words is "twelve billion, six hundred sixty-six million, one hundred fifteen thousand, seven hundred thirty-seven".