13687994415659 has 2 divisors, whose sum is σ = 13687994415660. Its totient is φ = 13687994415658.

The previous prime is 13687994415637. The next prime is 13687994415763. The reversal of 13687994415659 is 95651449978631.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13687994415659 is a prime.

It is a super-2 number, since 2×13687994415659² (a number of 27 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 13687994415659.

It is not a weakly prime, because it can be changed into another prime (13687994417659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6843997207829 + 6843997207830.

It is an arithmetic number, because the mean of its divisors is an integer number (6843997207830).

Almost surely, 2^{13687994415659} is an apocalyptic number.

13687994415659 is a deficient number, since it is larger than the sum of its proper divisors (1).

13687994415659 is an equidigital number, since it uses as much as digits as its factorization.

13687994415659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1763596800, while the sum is 77.

The spelling of 13687994415659 in words is "thirteen trillion, six hundred eighty-seven billion, nine hundred ninety-four million, four hundred fifteen thousand, six hundred fifty-nine".