13879643699 has 2 divisors, whose sum is σ = 13879643700. Its totient is φ = 13879643698.

The previous prime is 13879643683. The next prime is 13879643719. The reversal of 13879643699 is 99634697831.

It is a weak prime.

It is an emirp because it is prime and its reverse (99634697831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13879643699 - 2⁴ = 13879643683 is a prime.

It is a super-2 number, since 2×13879643699² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13879643639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6939821849 + 6939821850.

It is an arithmetic number, because the mean of its divisors is an integer number (6939821850).

Almost surely, 2^13879643699 is an apocalyptic number.

13879643699 is a deficient number, since it is larger than the sum of its proper divisors (1).

13879643699 is an equidigital number, since it uses as much as digits as its factorization.

13879643699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52907904, while the sum is 65.

The spelling of 13879643699 in words is "thirteen billion, eight hundred seventy-nine million, six hundred forty-three thousand, six hundred ninety-nine".