12109679715 has 64 divisors (see below), whose sum is σ = 22510632960. Its totient is φ = 5444599680.

The previous prime is 12109679677. The next prime is 12109679741. The reversal of 12109679715 is 51797690121.

It is not a de Polignac number, because 12109679715 - 2¹¹ = 12109677667 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2245252 + ... + 2250638.

It is an arithmetic number, because the mean of its divisors is an integer number (351728640).

Almost surely, 2^12109679715 is an apocalyptic number.

12109679715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12109679715 is a deficient number, since it is larger than the sum of its proper divisors (10400953245).

12109679715 is a wasteful number, since it uses less digits than its factorization.

12109679715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5752.

The product of its (nonzero) digits is 238140, while the sum is 48.

The spelling of 12109679715 in words is "twelve billion, one hundred nine million, six hundred seventy-nine thousand, seven hundred fifteen".