13136351561 has 8 divisors (see below), whose sum is σ = 13167323520. Its totient is φ = 13105402992.

The previous prime is 13136351539. The next prime is 13136351567. The reversal of 13136351561 is 16515363131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13136351561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13136351567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1627211 + ... + 1635263.

It is an arithmetic number, because the mean of its divisors is an integer number (1645915440).

Almost surely, 2^13136351561 is an apocalyptic number.

It is an amenable number.

13136351561 is a deficient number, since it is larger than the sum of its proper divisors (30971959).

13136351561 is an equidigital number, since it uses as much as digits as its factorization.

13136351561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11695.

The product of its digits is 24300, while the sum is 35.

The spelling of 13136351561 in words is "thirteen billion, one hundred thirty-six million, three hundred fifty-one thousand, five hundred sixty-one".