78005089193 has 2 divisors, whose sum is σ = 78005089194. Its totient is φ = 78005089192.

The previous prime is 78005089153. The next prime is 78005089213. The reversal of 78005089193 is 39198050087.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70621468009 + 7383621184 = 265747^2 + 85928^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78005089193 is a prime.

It is not a weakly prime, because it can be changed into another prime (78005089103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39002544596 + 39002544597.

It is an arithmetic number, because the mean of its divisors is an integer number (39002544597).

Almost surely, 2^78005089193 is an apocalyptic number.

It is an amenable number.

78005089193 is a deficient number, since it is larger than the sum of its proper divisors (1).

78005089193 is an equidigital number, since it uses as much as digits as its factorization.

78005089193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 50.

The spelling of 78005089193 in words is "seventy-eight billion, five million, eighty-nine thousand, one hundred ninety-three".