13565116061 has 4 divisors (see below), whose sum is σ = 15502989792. Its totient is φ = 11627242332.

The previous prime is 13565116031. The next prime is 13565116099. The reversal of 13565116061 is 16061156531.

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 not a de Polignac number, because 13565116061 - 2³⁰ = 12491374237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13565116021) 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, 968936855 + ... + 968936868.

It is an arithmetic number, because the mean of its divisors is an integer number (3875747448).

Almost surely, 2^13565116061 is an apocalyptic number.

It is an amenable number.

13565116061 is a deficient number, since it is larger than the sum of its proper divisors (1937873731).

13565116061 is an equidigital number, since it uses as much as digits as its factorization.

13565116061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937873730.

The product of its (nonzero) digits is 16200, while the sum is 35.

The spelling of 13565116061 in words is "thirteen billion, five hundred sixty-five million, one hundred sixteen thousand, sixty-one".