12615980789 has 16 divisors (see below), whose sum is σ = 13425952176. Its totient is φ = 11813683200.

The previous prime is 12615980701. The next prime is 12615980821. The reversal of 12615980789 is 98708951621.

It can be written as a sum of positive squares in 8 ways, for example, as 159188689 + 12456792100 = 12617^2 + 111610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12615980789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12615988789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4147109 + ... + 4150149.

It is an arithmetic number, because the mean of its divisors is an integer number (839122011).

Almost surely, 2^12615980789 is an apocalyptic number.

It is an amenable number.

12615980789 is a deficient number, since it is larger than the sum of its proper divisors (809971387).

12615980789 is a wasteful number, since it uses less digits than its factorization.

12615980789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4216.

The product of its (nonzero) digits is 2177280, while the sum is 56.

The spelling of 12615980789 in words is "twelve billion, six hundred fifteen million, nine hundred eighty thousand, seven hundred eighty-nine".