13685724196 has 27 divisors (see below), whose sum is σ = 24816661779. Its totient is φ = 6603625728.

The previous prime is 13685724127. The next prime is 13685724197. The reversal of 13685724196 is 69142758631.

The square root of 13685724196 is 116986.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2137212900 + 11548511296 = 46230^2 + 107464^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13685724197) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6784180 + ... + 6786196.

Almost surely, 2^13685724196 is an apocalyptic number.

13685724196 is the 116986-th square number.

It is an amenable number.

13685724196 is a deficient number, since it is larger than the sum of its proper divisors (11130937583).

13685724196 is an frugal number, since it uses more digits than its factorization.

13685724196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4096 (or 2048 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 52.

It can be divided in two parts, 13685 and 724196, that added together give a square (737881 = 859²).

The spelling of 13685724196 in words is "thirteen billion, six hundred eighty-five million, seven hundred twenty-four thousand, one hundred ninety-six".