78442417883 has 2 divisors, whose sum is σ = 78442417884. Its totient is φ = 78442417882.

The previous prime is 78442417829. The next prime is 78442417901. The reversal of 78442417883 is 38871424487.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78442417883 - 2¹⁰ = 78442416859 is a prime.

It is not a weakly prime, because it can be changed into another prime (78442417813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39221208941 + 39221208942.

It is an arithmetic number, because the mean of its divisors is an integer number (39221208942).

Almost surely, 2^78442417883 is an apocalyptic number.

78442417883 is a deficient number, since it is larger than the sum of its proper divisors (1).

78442417883 is an equidigital number, since it uses as much as digits as its factorization.

78442417883 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9633792, while the sum is 56.

The spelling of 78442417883 in words is "seventy-eight billion, four hundred forty-two million, four hundred seventeen thousand, eight hundred eighty-three".