13561555117 has 8 divisors (see below), whose sum is σ = 15155263872. Its totient is φ = 12027986400.

The previous prime is 13561555109. The next prime is 13561555171. The reversal of 13561555117 is 71155516531.

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

It is a cyclic number.

It is not a de Polignac number, because 13561555117 - 2³ = 13561555109 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 13561555117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13561555187) 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, 15034533 + ... + 15035434.

It is an arithmetic number, because the mean of its divisors is an integer number (1894407984).

Almost surely, 2^13561555117 is an apocalyptic number.

It is an amenable number.

13561555117 is a deficient number, since it is larger than the sum of its proper divisors (1593708755).

13561555117 is a wasteful number, since it uses less digits than its factorization.

13561555117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30070019.

The product of its digits is 78750, while the sum is 40.

The spelling of 13561555117 in words is "thirteen billion, five hundred sixty-one million, five hundred fifty-five thousand, one hundred seventeen".