13136526621 has 20 divisors (see below), whose sum is σ = 19664726400. Its totient is φ = 8739375336.

The previous prime is 13136526577. The next prime is 13136526661. The reversal of 13136526621 is 12662563131.

13136526621 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 6 + 5 + 26 + 621 = 666.

It is not a de Polignac number, because 13136526621 - 2⁷ = 13136526493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13136526661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 130491 + ... + 208088.

It is an arithmetic number, because the mean of its divisors is an integer number (983236320).

Almost surely, 2^13136526621 is an apocalyptic number.

It is an amenable number.

13136526621 is a deficient number, since it is larger than the sum of its proper divisors (6528199779).

13136526621 is an equidigital number, since it uses as much as digits as its factorization.

13136526621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339070 (or 339061 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The spelling of 13136526621 in words is "thirteen billion, one hundred thirty-six million, five hundred twenty-six thousand, six hundred twenty-one".