13699063850 has 12 divisors (see below), whose sum is σ = 25480258854. Its totient is φ = 5479625520.

The previous prime is 13699063843. The next prime is 13699063871. The reversal of 13699063850 is 5836099631.

It is a Cunningham number, because it is equal to 117043²+1.

It can be written as a sum of positive squares in 3 ways, for example, as 12624994321 + 1074069529 = 112361^2 + 32773^2 .

It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 273981277 = 13699063850 / (1 + 3 + 6 + 9 + 9 + 0 + 6 + 3 + 8 + 5 + 0).

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, 136990589 + ... + 136990688.

Almost surely, 2^13699063850 is an apocalyptic number.

13699063850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13699063850 is a deficient number, since it is larger than the sum of its proper divisors (11781195004).

13699063850 is a wasteful number, since it uses less digits than its factorization.

13699063850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273981289 (or 273981284 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 50.

The spelling of 13699063850 in words is "thirteen billion, six hundred ninety-nine million, sixty-three thousand, eight hundred fifty".