78026076493 has 2 divisors, whose sum is σ = 78026076494. Its totient is φ = 78026076492.

The previous prime is 78026076473. The next prime is 78026076497. The reversal of 78026076493 is 39467062087.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76011592804 + 2014483689 = 275702^2 + 44883^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78026076493 is a prime.

It is a super-2 number, since 2×78026076493² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78026076493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78026076497) 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, 39013038246 + 39013038247.

It is an arithmetic number, because the mean of its divisors is an integer number (39013038247).

Almost surely, 2^78026076493 is an apocalyptic number.

It is an amenable number.

78026076493 is a deficient number, since it is larger than the sum of its proper divisors (1).

78026076493 is an equidigital number, since it uses as much as digits as its factorization.

78026076493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 78026076493 in words is "seventy-eight billion, twenty-six million, seventy-six thousand, four hundred ninety-three".