13980565559 has 4 divisors (see below), whose sum is σ = 13984950000. Its totient is φ = 13976181120.

The previous prime is 13980565531. The next prime is 13980565561. The reversal of 13980565559 is 95556508931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13980565559 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 (13980565259) 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, 2187434 + ... + 2193815.

It is an arithmetic number, because the mean of its divisors is an integer number (3496237500).

Almost surely, 2^13980565559 is an apocalyptic number.

13980565559 is a deficient number, since it is larger than the sum of its proper divisors (4384441).

13980565559 is an equidigital number, since it uses as much as digits as its factorization.

13980565559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4384440.

The product of its (nonzero) digits is 7290000, while the sum is 56.

The spelling of 13980565559 in words is "thirteen billion, nine hundred eighty million, five hundred sixty-five thousand, five hundred fifty-nine".