13781715559 has 16 divisors (see below), whose sum is σ = 14662818720. Its totient is φ = 12930825600.

The previous prime is 13781715547. The next prime is 13781715599. The reversal of 13781715559 is 95551718731.

It is a cyclic number.

It is not a de Polignac number, because 13781715559 - 2¹³ = 13781707367 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 (13781715599) 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, 217609 + ... + 273709.

It is an arithmetic number, because the mean of its divisors is an integer number (916426170).

Almost surely, 2^13781715559 is an apocalyptic number.

13781715559 is a deficient number, since it is larger than the sum of its proper divisors (881103161).

13781715559 is a wasteful number, since it uses less digits than its factorization.

13781715559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56370.

The product of its digits is 1323000, while the sum is 52.

The spelling of 13781715559 in words is "thirteen billion, seven hundred eighty-one million, seven hundred fifteen thousand, five hundred fifty-nine".