12738759715 has 16 divisors (see below), whose sum is σ = 16678677600. Its totient is φ = 9263173120.

The previous prime is 12738759713. The next prime is 12738759767. The reversal of 12738759715 is 51795783721.

It is not a de Polignac number, because 12738759715 - 2¹ = 12738759713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is not an unprimeable number, because it can be changed into a prime (12738759713) 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, 489861 + ... + 515209.

It is an arithmetic number, because the mean of its divisors is an integer number (1042417350).

Almost surely, 2^12738759715 is an apocalyptic number.

12738759715 is a deficient number, since it is larger than the sum of its proper divisors (3939917885).

12738759715 is a wasteful number, since it uses less digits than its factorization.

12738759715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34502.

The product of its digits is 3704400, while the sum is 55.

The spelling of 12738759715 in words is "twelve billion, seven hundred thirty-eight million, seven hundred fifty-nine thousand, seven hundred fifteen".