13321568861 has 16 divisors (see below), whose sum is σ = 13893580800. Its totient is φ = 12763795968.

The previous prime is 13321568831. The next prime is 13321568863. The reversal of 13321568861 is 16886512331.

It is a cyclic number.

It is not a de Polignac number, because 13321568861 - 2¹⁰ = 13321567837 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 (13321568863) 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, 472325 + ... + 499733.

It is an arithmetic number, because the mean of its divisors is an integer number (868348800).

Almost surely, 2^13321568861 is an apocalyptic number.

It is an amenable number.

13321568861 is a deficient number, since it is larger than the sum of its proper divisors (572011939).

13321568861 is a wasteful number, since it uses less digits than its factorization.

13321568861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27668.

The product of its digits is 207360, while the sum is 44.

The spelling of 13321568861 in words is "thirteen billion, three hundred twenty-one million, five hundred sixty-eight thousand, eight hundred sixty-one".