12615749899 has 2 divisors, whose sum is σ = 12615749900. Its totient is φ = 12615749898.

The previous prime is 12615749857. The next prime is 12615749959. The reversal of 12615749899 is 99894751621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12615749899 - 2¹⁵ = 12615717131 is a prime.

It is not a weakly prime, because it can be changed into another prime (12615749819) 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 as a sum of consecutive naturals, namely, 6307874949 + 6307874950.

It is an arithmetic number, because the mean of its divisors is an integer number (6307874950).

Almost surely, 2^12615749899 is an apocalyptic number.

12615749899 is a deficient number, since it is larger than the sum of its proper divisors (1).

12615749899 is an equidigital number, since it uses as much as digits as its factorization.

12615749899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 61.

The spelling of 12615749899 in words is "twelve billion, six hundred fifteen million, seven hundred forty-nine thousand, eight hundred ninety-nine".