12652517605 has 24 divisors (see below), whose sum is σ = 19020492792. Its totient is φ = 8008624512.

The previous prime is 12652517569. The next prime is 12652517617. The reversal of 12652517605 is 50671525621.

It can be written as a sum of positive squares in 4 ways, for example, as 2994935076 + 9657582529 = 54726^2 + 98273^2 .

It is not a de Polignac number, because 12652517605 - 2¹⁷ = 12652386533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1983082 + ... + 1989451.

It is an arithmetic number, because the mean of its divisors is an integer number (792520533).

Almost surely, 2^12652517605 is an apocalyptic number.

It is an amenable number.

12652517605 is a deficient number, since it is larger than the sum of its proper divisors (6367975187).

12652517605 is a wasteful number, since it uses less digits than its factorization.

12652517605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3972565 (or 3972558 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 12652517605 in words is "twelve billion, six hundred fifty-two million, five hundred seventeen thousand, six hundred five".