13613552061 has 4 divisors (see below), whose sum is σ = 18151402752. Its totient is φ = 9075701372.

The previous prime is 13613552047. The next prime is 13613552063. The reversal of 13613552061 is 16025531631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13613552061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13613552063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2268925341 + ... + 2268925346.

It is an arithmetic number, because the mean of its divisors is an integer number (4537850688).

Almost surely, 2^13613552061 is an apocalyptic number.

It is an amenable number.

13613552061 is a deficient number, since it is larger than the sum of its proper divisors (4537850691).

13613552061 is an equidigital number, since it uses as much as digits as its factorization.

13613552061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4537850690.

The product of its (nonzero) digits is 16200, while the sum is 33.

The spelling of 13613552061 in words is "thirteen billion, six hundred thirteen million, five hundred fifty-two thousand, sixty-one".