12536566513 has 16 divisors (see below), whose sum is σ = 13816068480. Its totient is φ = 11322291456.

The previous prime is 12536566459. The next prime is 12536566517. The reversal of 12536566513 is 31566563521.

It is a cyclic number.

It is not a de Polignac number, because 12536566513 - 2¹⁷ = 12536435441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12536566513.

It is not an unprimeable number, because it can be changed into a prime (12536566517) 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, 2356 + ... + 158362.

It is an arithmetic number, because the mean of its divisors is an integer number (863504280).

Almost surely, 2^12536566513 is an apocalyptic number.

It is an amenable number.

12536566513 is a deficient number, since it is larger than the sum of its proper divisors (1279501967).

12536566513 is a wasteful number, since it uses less digits than its factorization.

12536566513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156216.

The product of its digits is 486000, while the sum is 43.

The spelling of 12536566513 in words is "twelve billion, five hundred thirty-six million, five hundred sixty-six thousand, five hundred thirteen".