13616636065 has 32 divisors (see below), whose sum is σ = 17480365056. Its totient is φ = 10157864640.

The previous prime is 13616636063. The next prime is 13616636069. The reversal of 13616636065 is 56063661631.

It is not a de Polignac number, because 13616636065 - 2¹ = 13616636063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (13616636063) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2900370 + ... + 2905060.

It is an arithmetic number, because the mean of its divisors is an integer number (546261408).

Almost surely, 2^13616636065 is an apocalyptic number.

It is an amenable number.

13616636065 is a deficient number, since it is larger than the sum of its proper divisors (3863728991).

13616636065 is a wasteful number, since it uses less digits than its factorization.

13616636065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5349.

The product of its (nonzero) digits is 349920, while the sum is 43.

The spelling of 13616636065 in words is "thirteen billion, six hundred sixteen million, six hundred thirty-six thousand, sixty-five".