13688698250 has 16 divisors (see below), whose sum is σ = 25625243592. Its totient is φ = 5475479200.

The previous prime is 13688698211. The next prime is 13688698259. The reversal of 13688698250 is 5289688631.

It can be written as a sum of positive squares in 4 ways, for example, as 5875375801 + 7813322449 = 76651^2 + 88393^2 .

It is not an unprimeable number, because it can be changed into a prime (13688698259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27377147 + ... + 27377646.

Almost surely, 2^13688698250 is an apocalyptic number.

13688698250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13688698250 is a deficient number, since it is larger than the sum of its proper divisors (11936545342).

13688698250 is an equidigital number, since it uses as much as digits as its factorization.

13688698250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54754810 (or 54754800 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 13688698250 in words is "thirteen billion, six hundred eighty-eight million, six hundred ninety-eight thousand, two hundred fifty".