13564173868 has 96 divisors (see below), whose sum is σ = 28481402880. Its totient is φ = 5532364800.

The previous prime is 13564173859. The next prime is 13564173871. The reversal of 13564173868 is 86837146531.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7530568 + ... + 7532368.

It is an arithmetic number, because the mean of its divisors is an integer number (296681280).

Almost surely, 2^13564173868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13564173868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14240701440).

13564173868 is an abundant number, since it is smaller than the sum of its proper divisors (14917229012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13564173868 is a wasteful number, since it uses less digits than its factorization.

13564173868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015 (or 2013 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 52.

The spelling of 13564173868 in words is "thirteen billion, five hundred sixty-four million, one hundred seventy-three thousand, eight hundred sixty-eight".