13688338850 has 12 divisors (see below), whose sum is σ = 25460310354. Its totient is φ = 5475335520.

The previous prime is 13688338847. The next prime is 13688338877. The reversal of 13688338850 is 5883388631.

It can be written as a sum of positive squares in 3 ways, for example, as 13182943489 + 505395361 = 114817^2 + 22481^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13688338792 and 13688338801.

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, 136883339 + ... + 136883438.

Almost surely, 2^13688338850 is an apocalyptic number.

13688338850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13688338850 is a deficient number, since it is larger than the sum of its proper divisors (11771971504).

13688338850 is a wasteful number, since it uses less digits than its factorization.

13688338850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273766789 (or 273766784 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 53.

The spelling of 13688338850 in words is "thirteen billion, six hundred eighty-eight million, three hundred thirty-eight thousand, eight hundred fifty".