13685209201 has 2 divisors, whose sum is σ = 13685209202. Its totient is φ = 13685209200.

The previous prime is 13685209193. The next prime is 13685209267. The reversal of 13685209201 is 10290258631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11379768976 + 2305440225 = 106676^2 + 48015^2 .

It is a cyclic number.

It is not a de Polignac number, because 13685209201 - 2³ = 13685209193 is a prime.

It is not a weakly prime, because it can be changed into another prime (13685204201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6842604600 + 6842604601.

It is an arithmetic number, because the mean of its divisors is an integer number (6842604601).

Almost surely, 2^13685209201 is an apocalyptic number.

It is an amenable number.

13685209201 is a deficient number, since it is larger than the sum of its proper divisors (1).

13685209201 is an equidigital number, since it uses as much as digits as its factorization.

13685209201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 13685209201 in words is "thirteen billion, six hundred eighty-five million, two hundred nine thousand, two hundred one".