12515276479 has 2 divisors, whose sum is σ = 12515276480. Its totient is φ = 12515276478.

The previous prime is 12515276447. The next prime is 12515276539. The reversal of 12515276479 is 97467251521.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12515276479 - 2⁵ = 12515276447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12515274479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6257638239 + 6257638240.

It is an arithmetic number, because the mean of its divisors is an integer number (6257638240).

Almost surely, 2^12515276479 is an apocalyptic number.

12515276479 is a deficient number, since it is larger than the sum of its proper divisors (1).

12515276479 is an equidigital number, since it uses as much as digits as its factorization.

12515276479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1058400, while the sum is 49.

The spelling of 12515276479 in words is "twelve billion, five hundred fifteen million, two hundred seventy-six thousand, four hundred seventy-nine".