12536109513 has 12 divisors (see below), whose sum is σ = 18239888628. Its totient is φ = 8296402560.

The previous prime is 12536109493. The next prime is 12536109539. The reversal of 12536109513 is 31590163521.

It is a happy number.

12536109513 is a `hidden beast` number, since 1 + 2 + 5 + 36 + 109 + 513 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10472042889 + 2064066624 = 102333^2 + 45432^2 .

It is not a de Polignac number, because 12536109513 - 2¹³ = 12536101321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12536109613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5082348 + ... + 5084813.

It is an arithmetic number, because the mean of its divisors is an integer number (1519990719).

Almost surely, 2^12536109513 is an apocalyptic number.

It is an amenable number.

12536109513 is a deficient number, since it is larger than the sum of its proper divisors (5703779115).

12536109513 is a wasteful number, since it uses less digits than its factorization.

12536109513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10167304 (or 10167301 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The spelling of 12536109513 in words is "twelve billion, five hundred thirty-six million, one hundred nine thousand, five hundred thirteen".