12659520519 has 24 divisors (see below), whose sum is σ = 18411536000. Its totient is φ = 8381886480.

The previous prime is 12659520473. The next prime is 12659520631. The reversal of 12659520519 is 91502595621.

12659520519 is a `hidden beast` number, since 1 + 2 + 6 + 595 + 2 + 0 + 51 + 9 = 666.

It is not a de Polignac number, because 12659520519 - 2²⁴ = 12642743303 is a prime.

It is a super-2 number, since 2×12659520519² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12659520019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1016472 + ... + 1028850.

Almost surely, 2^12659520519 is an apocalyptic number.

12659520519 is a deficient number, since it is larger than the sum of its proper divisors (5752015481).

12659520519 is a wasteful number, since it uses less digits than its factorization.

12659520519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13155 (or 13152 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The spelling of 12659520519 in words is "twelve billion, six hundred fifty-nine million, five hundred twenty thousand, five hundred nineteen".