13897863511 has 16 divisors (see below), whose sum is σ = 16851905280. Its totient is φ = 11188840320.

The previous prime is 13897863503. The next prime is 13897863523. The reversal of 13897863511 is 11536879831.

It is not a de Polignac number, because 13897863511 - 2³ = 13897863503 is a prime.

It is a super-2 number, since 2×13897863511² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13897863541) 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, 60501 + ... + 177358.

It is an arithmetic number, because the mean of its divisors is an integer number (1053244080).

Almost surely, 2^13897863511 is an apocalyptic number.

13897863511 is a deficient number, since it is larger than the sum of its proper divisors (2954041769).

13897863511 is a wasteful number, since it uses less digits than its factorization.

13897863511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238374.

The product of its digits is 1088640, while the sum is 52.

The spelling of 13897863511 in words is "thirteen billion, eight hundred ninety-seven million, eight hundred sixty-three thousand, five hundred eleven".