12513889999 has 4 divisors (see below), whose sum is σ = 13476496936. Its totient is φ = 11551283064.

The previous prime is 12513889937. The next prime is 12513890033. The reversal of 12513889999 is 99998831521.

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 12513889999 - 2¹¹ = 12513887951 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 12513889999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12513889909) 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, 481303449 + ... + 481303474.

It is an arithmetic number, because the mean of its divisors is an integer number (3369124234).

Almost surely, 2^12513889999 is an apocalyptic number.

12513889999 is a deficient number, since it is larger than the sum of its proper divisors (962606937).

12513889999 is an equidigital number, since it uses as much as digits as its factorization.

12513889999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962606936.

The product of its digits is 12597120, while the sum is 64.

The spelling of 12513889999 in words is "twelve billion, five hundred thirteen million, eight hundred eighty-nine thousand, nine hundred ninety-nine".