13781107975 has 6 divisors (see below), whose sum is σ = 17088573920. Its totient is φ = 11024886360.

The previous prime is 13781107957. The next prime is 13781108027. The reversal of 13781107975 is 57970118731.

It is a happy number.

It is not a de Polignac number, because 13781107975 - 2¹⁵ = 13781075207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 275622135 + ... + 275622184.

Almost surely, 2^13781107975 is an apocalyptic number.

13781107975 is a deficient number, since it is larger than the sum of its proper divisors (3307465945).

13781107975 is an equidigital number, since it uses as much as digits as its factorization.

13781107975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551244329 (or 551244324 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 49.

The spelling of 13781107975 in words is "thirteen billion, seven hundred eighty-one million, one hundred seven thousand, nine hundred seventy-five".