12215719659 has 16 divisors (see below), whose sum is σ = 19135113984. Its totient is φ = 6833968800.

The previous prime is 12215719657. The next prime is 12215719679. The reversal of 12215719659 is 95691751221.

It is not a de Polignac number, because 12215719659 - 2¹ = 12215719657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12215719651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14237007 + ... + 14237864.

It is an arithmetic number, because the mean of its divisors is an integer number (1195944624).

Almost surely, 2^12215719659 is an apocalyptic number.

12215719659 is a deficient number, since it is larger than the sum of its proper divisors (6919394325).

12215719659 is a wasteful number, since it uses less digits than its factorization.

12215719659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28474898.

The product of its digits is 340200, while the sum is 48.

The spelling of 12215719659 in words is "twelve billion, two hundred fifteen million, seven hundred nineteen thousand, six hundred fifty-nine".