13613561241 has 16 divisors (see below), whose sum is σ = 21646408704. Its totient is φ = 7440952464.

The previous prime is 13613561201. The next prime is 13613561249. The reversal of 13613561241 is 14216531631.

It is a happy number.

It is not a de Polignac number, because 13613561241 - 2⁶ = 13613561177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13613561249) 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, 14092231 + ... + 14093196.

It is an arithmetic number, because the mean of its divisors is an integer number (1352900544).

Almost surely, 2^13613561241 is an apocalyptic number.

It is an amenable number.

13613561241 is a deficient number, since it is larger than the sum of its proper divisors (8032847463).

13613561241 is a wasteful number, since it uses less digits than its factorization.

13613561241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28185460.

The product of its digits is 12960, while the sum is 33.

The spelling of 13613561241 in words is "thirteen billion, six hundred thirteen million, five hundred sixty-one thousand, two hundred forty-one".