13340136561 has 16 divisors (see below), whose sum is σ = 18403459200. Its totient is φ = 8585228288.

The previous prime is 13340136533. The next prime is 13340136587. The reversal of 13340136561 is 16563104331.

It is a cyclic number.

It is not a de Polignac number, because 13340136561 - 2⁵ = 13340136529 is a prime.

It is a super-2 number, since 2×13340136561² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13340136961) 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, 680860 + ... + 700178.

It is an arithmetic number, because the mean of its divisors is an integer number (1150216200).

Almost surely, 2^13340136561 is an apocalyptic number.

It is an amenable number.

13340136561 is a deficient number, since it is larger than the sum of its proper divisors (5063322639).

13340136561 is a wasteful number, since it uses less digits than its factorization.

13340136561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27288.

The product of its (nonzero) digits is 19440, while the sum is 33.

The spelling of 13340136561 in words is "thirteen billion, three hundred forty million, one hundred thirty-six thousand, five hundred sixty-one".