13896686205 has 12 divisors (see below), whose sum is σ = 24087589500. Its totient is φ = 7411565952.

The previous prime is 13896686201. The next prime is 13896686249. The reversal of 13896686205 is 50268669831.

It is a happy number.

13896686205 is a `hidden beast` number, since 1 + 3 + 8 + 9 + 6 + 6 + 8 + 620 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10843681689 + 3053004516 = 104133^2 + 55254^2 .

It is not a de Polignac number, because 13896686205 - 2² = 13896686201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13896686201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154407580 + ... + 154407669.

It is an arithmetic number, because the mean of its divisors is an integer number (2007299125).

Almost surely, 2^13896686205 is an apocalyptic number.

13896686205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13896686205 is a deficient number, since it is larger than the sum of its proper divisors (10190903295).

13896686205 is a wasteful number, since it uses less digits than its factorization.

13896686205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308815260 (or 308815257 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 13896686205 in words is "thirteen billion, eight hundred ninety-six million, six hundred eighty-six thousand, two hundred five".