13699445779 has 2 divisors, whose sum is σ = 13699445780. Its totient is φ = 13699445778.

The previous prime is 13699445741. The next prime is 13699445803. The reversal of 13699445779 is 97754499631.

It is a strong prime.

It is an emirp because it is prime and its reverse (97754499631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13699445779 - 2¹⁹ = 13698921491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13699445779.

It is not a weakly prime, because it can be changed into another prime (13699445719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6849722889 + 6849722890.

It is an arithmetic number, because the mean of its divisors is an integer number (6849722890).

Almost surely, 2^13699445779 is an apocalyptic number.

13699445779 is a deficient number, since it is larger than the sum of its proper divisors (1).

13699445779 is an equidigital number, since it uses as much as digits as its factorization.

13699445779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51438240, while the sum is 64.

The spelling of 13699445779 in words is "thirteen billion, six hundred ninety-nine million, four hundred forty-five thousand, seven hundred seventy-nine".