13717297549 has 2 divisors, whose sum is σ = 13717297550. Its totient is φ = 13717297548.

The previous prime is 13717297523. The next prime is 13717297577. The reversal of 13717297549 is 94579271731.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13460176324 + 257121225 = 116018^2 + 16035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13717297549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13717297549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13717297519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6858648774 + 6858648775.

It is an arithmetic number, because the mean of its divisors is an integer number (6858648775).

Almost surely, 2^13717297549 is an apocalyptic number.

It is an amenable number.

13717297549 is a deficient number, since it is larger than the sum of its proper divisors (1).

13717297549 is an equidigital number, since it uses as much as digits as its factorization.

13717297549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3333960, while the sum is 55.

The spelling of 13717297549 in words is "thirteen billion, seven hundred seventeen million, two hundred ninety-seven thousand, five hundred forty-nine".