13509864679 has 2 divisors, whose sum is σ = 13509864680. Its totient is φ = 13509864678.

The previous prime is 13509864661. The next prime is 13509864727. The reversal of 13509864679 is 97646890531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13509864679 - 2⁷ = 13509864551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13509864659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6754932339 + 6754932340.

It is an arithmetic number, because the mean of its divisors is an integer number (6754932340).

Almost surely, 2^13509864679 is an apocalyptic number.

13509864679 is a deficient number, since it is larger than the sum of its proper divisors (1).

13509864679 is an equidigital number, since it uses as much as digits as its factorization.

13509864679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 13509864679 in words is "thirteen billion, five hundred nine million, eight hundred sixty-four thousand, six hundred seventy-nine".