77364004720789 has 2 divisors, whose sum is σ = 77364004720790. Its totient is φ = 77364004720788.

The previous prime is 77364004720693. The next prime is 77364004720859. The reversal of 77364004720789 is 98702740046377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65814814192689 + 11549190528100 = 8112633^2 + 3398410^2 .

It is a cyclic number.

It is not a de Polignac number, because 77364004720789 - 2⁷ = 77364004720661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77364004720789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77364004750789) 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, 38682002360394 + 38682002360395.

It is an arithmetic number, because the mean of its divisors is an integer number (38682002360395).

Almost surely, 2^{77364004720789} is an apocalyptic number.

It is an amenable number.

77364004720789 is a deficient number, since it is larger than the sum of its proper divisors (1).

77364004720789 is an equidigital number, since it uses as much as digits as its factorization.

77364004720789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 99574272, while the sum is 64.

The spelling of 77364004720789 in words is "seventy-seven trillion, three hundred sixty-four billion, four million, seven hundred twenty thousand, seven hundred eighty-nine".