12641552539 has 16 divisors (see below), whose sum is σ = 15763507200. Its totient is φ = 9848928960.

The previous prime is 12641552533. The next prime is 12641552543. The reversal of 12641552539 is 93525514621.

It is a cyclic number.

It is not a de Polignac number, because 12641552539 - 2¹³ = 12641544347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12641552495 and 12641552504.

It is not an unprimeable number, because it can be changed into a prime (12641552533) 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, 687702 + ... + 705844.

It is an arithmetic number, because the mean of its divisors is an integer number (985219200).

Almost surely, 2^12641552539 is an apocalyptic number.

12641552539 is a deficient number, since it is larger than the sum of its proper divisors (3121954661).

12641552539 is a wasteful number, since it uses less digits than its factorization.

12641552539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27210.

The product of its digits is 324000, while the sum is 43.

The spelling of 12641552539 in words is "twelve billion, six hundred forty-one million, five hundred fifty-two thousand, five hundred thirty-nine".