13240502687 has 2 divisors, whose sum is σ = 13240502688. Its totient is φ = 13240502686.

The previous prime is 13240502669. The next prime is 13240502699. The reversal of 13240502687 is 78620504231.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13240502687 - 2⁶ = 13240502623 is a prime.

It is a super-2 number, since 2×13240502687² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13240502687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13240502617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6620251343 + 6620251344.

It is an arithmetic number, because the mean of its divisors is an integer number (6620251344).

Almost surely, 2^13240502687 is an apocalyptic number.

13240502687 is a deficient number, since it is larger than the sum of its proper divisors (1).

13240502687 is an equidigital number, since it uses as much as digits as its factorization.

13240502687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 13240502687 in words is "thirteen billion, two hundred forty million, five hundred two thousand, six hundred eighty-seven".