13791787979 has 2 divisors, whose sum is σ = 13791787980. Its totient is φ = 13791787978.

The previous prime is 13791787883. The next prime is 13791787981. The reversal of 13791787979 is 97978719731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13791787979 - 2²⁴ = 13775010763 is a prime.

It is a Sophie Germain prime.

Together with 13791787981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13791780979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6895893989 + 6895893990.

It is an arithmetic number, because the mean of its divisors is an integer number (6895893990).

Almost surely, 2^13791787979 is an apocalyptic number.

13791787979 is a deficient number, since it is larger than the sum of its proper divisors (1).

13791787979 is an equidigital number, since it uses as much as digits as its factorization.

13791787979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42007896, while the sum is 68.

The spelling of 13791787979 in words is "thirteen billion, seven hundred ninety-one million, seven hundred eighty-seven thousand, nine hundred seventy-nine".