13815193880 has 32 divisors (see below), whose sum is σ = 31104894240. Its totient is φ = 5522396160.

The previous prime is 13815193879. The next prime is 13815193907. The reversal of 13815193880 is 8839151831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53849 + ... + 174728.

It is an arithmetic number, because the mean of its divisors is an integer number (972027945).

Almost surely, 2^13815193880 is an apocalyptic number.

13815193880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13815193880 is an abundant number, since it is smaller than the sum of its proper divisors (17289700360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13815193880 is a wasteful number, since it uses less digits than its factorization.

13815193880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230099 (or 230095 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 47.

The spelling of 13815193880 in words is "thirteen billion, eight hundred fifteen million, one hundred ninety-three thousand, eight hundred eighty".