12512445659 has 16 divisors (see below), whose sum is σ = 14893295616. Its totient is φ = 10288101600.

The previous prime is 12512445629. The next prime is 12512445677. The reversal of 12512445659 is 95654421521.

It is a de Polignac number, because none of the positive numbers 2^k-12512445659 is a prime.

It is a super-2 number, since 2×12512445659² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12512445619) 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 15 ways as a sum of consecutive naturals, for example, 321827 + ... + 358604.

It is an arithmetic number, because the mean of its divisors is an integer number (930830976).

Almost surely, 2^12512445659 is an apocalyptic number.

12512445659 is a deficient number, since it is larger than the sum of its proper divisors (2380849957).

12512445659 is an equidigital number, since it uses as much as digits as its factorization.

12512445659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680546.

The product of its digits is 432000, while the sum is 44.

The spelling of 12512445659 in words is "twelve billion, five hundred twelve million, four hundred forty-five thousand, six hundred fifty-nine".