13857697567 has 4 divisors (see below), whose sum is σ = 15837368656. Its totient is φ = 11878026480.

The previous prime is 13857697561. The next prime is 13857697571. The reversal of 13857697567 is 76579675831.

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

It is a cyclic number.

It is not a de Polignac number, because 13857697567 - 2⁷ = 13857697439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13857697499 and 13857697508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13857697561) 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, 989835534 + ... + 989835547.

It is an arithmetic number, because the mean of its divisors is an integer number (3959342164).

Almost surely, 2^13857697567 is an apocalyptic number.

13857697567 is a deficient number, since it is larger than the sum of its proper divisors (1979671089).

13857697567 is an equidigital number, since it uses as much as digits as its factorization.

13857697567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979671088.

The product of its digits is 66679200, while the sum is 64.

The spelling of 13857697567 in words is "thirteen billion, eight hundred fifty-seven million, six hundred ninety-seven thousand, five hundred sixty-seven".