13965879761 has 2 divisors, whose sum is σ = 13965879762. Its totient is φ = 13965879760.

The previous prime is 13965879721. The next prime is 13965879791. The reversal of 13965879761 is 16797856931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13471084225 + 494795536 = 116065^2 + 22244^2 .

It is a cyclic number.

It is not a de Polignac number, because 13965879761 - 2¹⁴ = 13965863377 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13965879694 and 13965879703.

It is not a weakly prime, because it can be changed into another prime (13965879721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6982939880 + 6982939881.

It is an arithmetic number, because the mean of its divisors is an integer number (6982939881).

Almost surely, 2^13965879761 is an apocalyptic number.

It is an amenable number.

13965879761 is a deficient number, since it is larger than the sum of its proper divisors (1).

13965879761 is an equidigital number, since it uses as much as digits as its factorization.

13965879761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17146080, while the sum is 62.

The spelling of 13965879761 in words is "thirteen billion, nine hundred sixty-five million, eight hundred seventy-nine thousand, seven hundred sixty-one".