12501563279 has 2 divisors, whose sum is σ = 12501563280. Its totient is φ = 12501563278.

The previous prime is 12501563251. The next prime is 12501563357. The reversal of 12501563279 is 97236510521.

It is a weak prime.

It is an emirp because it is prime and its reverse (97236510521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12501563279 - 2²⁴ = 12484786063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12501563579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6250781639 + 6250781640.

It is an arithmetic number, because the mean of its divisors is an integer number (6250781640).

Almost surely, 2^12501563279 is an apocalyptic number.

12501563279 is a deficient number, since it is larger than the sum of its proper divisors (1).

12501563279 is an equidigital number, since it uses as much as digits as its factorization.

12501563279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 41.

The spelling of 12501563279 in words is "twelve billion, five hundred one million, five hundred sixty-three thousand, two hundred seventy-nine".