13240503517 has 2 divisors, whose sum is σ = 13240503518. Its totient is φ = 13240503516.

The previous prime is 13240503511. The next prime is 13240503547. The reversal of 13240503517 is 71530504231.

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., 10950785316 + 2289718201 = 104646^2 + 47851^2 .

It is a cyclic number.

It is not a de Polignac number, because 13240503517 - 2³ = 13240503509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13240503511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6620251758 + 6620251759.

It is an arithmetic number, because the mean of its divisors is an integer number (6620251759).

Almost surely, 2^13240503517 is an apocalyptic number.

It is an amenable number.

13240503517 is a deficient number, since it is larger than the sum of its proper divisors (1).

13240503517 is an equidigital number, since it uses as much as digits as its factorization.

13240503517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 31.

The spelling of 13240503517 in words is "thirteen billion, two hundred forty million, five hundred three thousand, five hundred seventeen".