12615254677 has 2 divisors, whose sum is σ = 12615254678. Its totient is φ = 12615254676.

The previous prime is 12615254647. The next prime is 12615254689. The reversal of 12615254677 is 77645251621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9806148676 + 2809106001 = 99026^2 + 53001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12615254677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12615254647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6307627338 + 6307627339.

It is an arithmetic number, because the mean of its divisors is an integer number (6307627339).

Almost surely, 2^12615254677 is an apocalyptic number.

It is an amenable number.

12615254677 is a deficient number, since it is larger than the sum of its proper divisors (1).

12615254677 is an equidigital number, since it uses as much as digits as its factorization.

12615254677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 705600, while the sum is 46.

The spelling of 12615254677 in words is "twelve billion, six hundred fifteen million, two hundred fifty-four thousand, six hundred seventy-seven".