13687544017 has 12 divisors (see below), whose sum is σ = 16310594916. Its totient is φ = 11446028160.

The previous prime is 13687544009. The next prime is 13687544063. The reversal of 13687544017 is 71044578631.

It can be written as a sum of positive squares in 2 ways, for example, as 7794064656 + 5893479361 = 88284^2 + 76769^2 .

It is not a de Polignac number, because 13687544017 - 2³ = 13687544009 is a prime.

It is a super-2 number, since 2×13687544017² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13687544317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3404548 + ... + 3408565.

It is an arithmetic number, because the mean of its divisors is an integer number (1359216243).

Almost surely, 2^13687544017 is an apocalyptic number.

It is an amenable number.

13687544017 is a deficient number, since it is larger than the sum of its proper divisors (2623050899).

13687544017 is an equidigital number, since it uses as much as digits as its factorization.

13687544017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6813168 (or 6813161 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 13687544017 in words is "thirteen billion, six hundred eighty-seven million, five hundred forty-four thousand, seventeen".