13731247565 has 16 divisors (see below), whose sum is σ = 19939156992. Its totient is φ = 8861846784.

The previous prime is 13731247553. The next prime is 13731247567. The reversal of 13731247565 is 56574213731.

It is not a de Polignac number, because 13731247565 - 2⁶ = 13731247501 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 (13731247567) 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, 11538269 + ... + 11539458.

It is an arithmetic number, because the mean of its divisors is an integer number (1246197312).

Almost surely, 2^13731247565 is an apocalyptic number.

It is an amenable number.

13731247565 is a deficient number, since it is larger than the sum of its proper divisors (6207909427).

13731247565 is a wasteful number, since it uses less digits than its factorization.

13731247565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23077756.

The product of its digits is 529200, while the sum is 44.

The spelling of 13731247565 in words is "thirteen billion, seven hundred thirty-one million, two hundred forty-seven thousand, five hundred sixty-five".