13399642079987 has 2 divisors, whose sum is σ = 13399642079988. Its totient is φ = 13399642079986.

The previous prime is 13399642079977. The next prime is 13399642080047. The reversal of 13399642079987 is 78997024699331.

13399642079987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13399642079987 is a prime.

It is not a weakly prime, because it can be changed into another prime (13399642079977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6699821039993 + 6699821039994.

It is an arithmetic number, because the mean of its divisors is an integer number (6699821039994).

Almost surely, 2^{13399642079987} is an apocalyptic number.

13399642079987 is a deficient number, since it is larger than the sum of its proper divisors (1).

13399642079987 is an equidigital number, since it uses as much as digits as its factorization.

13399642079987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1111065984, while the sum is 77.

The spelling of 13399642079987 in words is "thirteen trillion, three hundred ninety-nine billion, six hundred forty-two million, seventy-nine thousand, nine hundred eighty-seven".