13499870685 has 24 divisors (see below), whose sum is σ = 25126291296. Its totient is φ = 6171369120.

The previous prime is 13499870611. The next prime is 13499870689. The reversal of 13499870685 is 58607899431.

It is not a de Polignac number, because 13499870685 - 2¹⁰ = 13499869661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13499870689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9182851 + ... + 9184320.

It is an arithmetic number, because the mean of its divisors is an integer number (1046928804).

Almost surely, 2^13499870685 is an apocalyptic number.

13499870685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13499870685 is a deficient number, since it is larger than the sum of its proper divisors (11626420611).

13499870685 is a wasteful number, since it uses less digits than its factorization.

13499870685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18367193 (or 18367186 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 13499870685 in words is "thirteen billion, four hundred ninety-nine million, eight hundred seventy thousand, six hundred eighty-five".