78568931711 has 2 divisors, whose sum is σ = 78568931712. Its totient is φ = 78568931710.

The previous prime is 78568931627. The next prime is 78568931719. The reversal of 78568931711 is 11713986587.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78568931711 - 2¹⁸ = 78568669567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78568931719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39284465855 + 39284465856.

It is an arithmetic number, because the mean of its divisors is an integer number (39284465856).

Almost surely, 2^78568931711 is an apocalyptic number.

78568931711 is a deficient number, since it is larger than the sum of its proper divisors (1).

78568931711 is an equidigital number, since it uses as much as digits as its factorization.

78568931711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 56.

The spelling of 78568931711 in words is "seventy-eight billion, five hundred sixty-eight million, nine hundred thirty-one thousand, seven hundred eleven".