12513887639 has 32 divisors (see below), whose sum is σ = 14174330880. Its totient is φ = 11042460000.

The previous prime is 12513887593. The next prime is 12513887641. The reversal of 12513887639 is 93678831521.

It is not a de Polignac number, because 12513887639 - 2⁸ = 12513887383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12513887699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6413114 + ... + 6415064.

It is an arithmetic number, because the mean of its divisors is an integer number (442947840).

Almost surely, 2^12513887639 is an apocalyptic number.

12513887639 is a deficient number, since it is larger than the sum of its proper divisors (1660443241).

12513887639 is an equidigital number, since it uses as much as digits as its factorization.

12513887639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124 (or 2102 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 53.

The spelling of 12513887639 in words is "twelve billion, five hundred thirteen million, eight hundred eighty-seven thousand, six hundred thirty-nine".