13087867836 has 24 divisors (see below), whose sum is σ = 31866113664. Its totient is φ = 4172943280.

The previous prime is 13087867829. The next prime is 13087867861. The reversal of 13087867836 is 63876878031.

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, 23709630 + ... + 23710181.

It is an arithmetic number, because the mean of its divisors is an integer number (1327754736).

Almost surely, 2^13087867836 is an apocalyptic number.

It is an amenable number.

13087867836 is an abundant number, since it is smaller than the sum of its proper divisors (18778245828).

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

13087867836 is a wasteful number, since it uses less digits than its factorization.

13087867836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47419841 (or 47419839 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 57.

The spelling of 13087867836 in words is "thirteen billion, eighty-seven million, eight hundred sixty-seven thousand, eight hundred thirty-six".