78968494079 has 2 divisors, whose sum is σ = 78968494080. Its totient is φ = 78968494078.

The previous prime is 78968494069. The next prime is 78968494201. The reversal of 78968494079 is 97049486987.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78968494079 - 2¹² = 78968489983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78968494039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39484247039 + 39484247040.

It is an arithmetic number, because the mean of its divisors is an integer number (39484247040).

Almost surely, 2^78968494079 is an apocalyptic number.

78968494079 is a deficient number, since it is larger than the sum of its proper divisors (1).

78968494079 is an equidigital number, since it uses as much as digits as its factorization.

78968494079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 219469824, while the sum is 71.

The spelling of 78968494079 in words is "seventy-eight billion, nine hundred sixty-eight million, four hundred ninety-four thousand, seventy-nine".