12515698785 has 16 divisors (see below), whose sum is σ = 20046286656. Its totient is φ = 6667983168.

The previous prime is 12515698777. The next prime is 12515698801. The reversal of 12515698785 is 58789651521.

It is not a de Polignac number, because 12515698785 - 2³ = 12515698777 is a prime.

It is an unprimeable number.

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, 426334 + ... + 454743.

It is an arithmetic number, because the mean of its divisors is an integer number (1252892916).

Almost surely, 2^12515698785 is an apocalyptic number.

12515698785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12515698785 is a deficient number, since it is larger than the sum of its proper divisors (7530587871).

12515698785 is an equidigital number, since it uses as much as digits as its factorization.

12515698785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882032.

The product of its digits is 6048000, while the sum is 57.

The spelling of 12515698785 in words is "twelve billion, five hundred fifteen million, six hundred ninety-eight thousand, seven hundred eighty-five".