12766752513 has 6 divisors (see below), whose sum is σ = 18440864754. Its totient is φ = 8511168336.

The previous prime is 12766752511. The next prime is 12766752527. The reversal of 12766752513 is 31525766721.

It is a happy number.

12766752513 is a `hidden beast` number, since 1 + 2 + 7 + 66 + 75 + 2 + 513 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10864309824 + 1902442689 = 104232^2 + 43617^2 .

It is not a de Polignac number, because 12766752513 - 2¹ = 12766752511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12766752511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 709264020 + ... + 709264037.

It is an arithmetic number, because the mean of its divisors is an integer number (3073477459).

Almost surely, 2^12766752513 is an apocalyptic number.

It is an amenable number.

12766752513 is a deficient number, since it is larger than the sum of its proper divisors (5674112241).

12766752513 is a wasteful number, since it uses less digits than its factorization.

12766752513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418528063 (or 1418528060 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The spelling of 12766752513 in words is "twelve billion, seven hundred sixty-six million, seven hundred fifty-two thousand, five hundred thirteen".