12563137507 has 4 divisors (see below), whose sum is σ = 12564723160. Its totient is φ = 12561551856.

The previous prime is 12563137501. The next prime is 12563137577. The reversal of 12563137507 is 70573136521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12563137507 - 2¹⁵ = 12563104739 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12563137507.

It is not an unprimeable number, because it can be changed into a prime (12563137501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 780882 + ... + 796807.

It is an arithmetic number, because the mean of its divisors is an integer number (3141180790).

Almost surely, 2^12563137507 is an apocalyptic number.

12563137507 is a deficient number, since it is larger than the sum of its proper divisors (1585653).

12563137507 is an equidigital number, since it uses as much as digits as its factorization.

12563137507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585652.

The product of its (nonzero) digits is 132300, while the sum is 40.

The spelling of 12563137507 in words is "twelve billion, five hundred sixty-three million, one hundred thirty-seven thousand, five hundred seven".