12136512807 has 12 divisors (see below), whose sum is σ = 17646616624. Its totient is φ = 8037424800.

The previous prime is 12136512799. The next prime is 12136512821. The reversal of 12136512807 is 70821563121.

12136512807 is a `hidden beast` number, since 1 + 2 + 136 + 512 + 8 + 0 + 7 = 666.

It is not a de Polignac number, because 12136512807 - 2³ = 12136512799 is a prime.

It is a super-2 number, since 2×12136512807² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12136512107) 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 11 ways as a sum of consecutive naturals, for example, 4463878 + ... + 4466595.

Almost surely, 2^12136512807 is an apocalyptic number.

12136512807 is a deficient number, since it is larger than the sum of its proper divisors (5510103817).

12136512807 is a wasteful number, since it uses less digits than its factorization.

12136512807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8930630 (or 8930627 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 12136512807 in words is "twelve billion, one hundred thirty-six million, five hundred twelve thousand, eight hundred seven".