77066518799 has 2 divisors, whose sum is σ = 77066518800. Its totient is φ = 77066518798.

The previous prime is 77066518747. The next prime is 77066518883. The reversal of 77066518799 is 99781566077.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77066518799 - 2¹² = 77066514703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77066518699) 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, 38533259399 + 38533259400.

It is an arithmetic number, because the mean of its divisors is an integer number (38533259400).

Almost surely, 2^77066518799 is an apocalyptic number.

77066518799 is a deficient number, since it is larger than the sum of its proper divisors (1).

77066518799 is an equidigital number, since it uses as much as digits as its factorization.

77066518799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40007520, while the sum is 65.

The spelling of 77066518799 in words is "seventy-seven billion, sixty-six million, five hundred eighteen thousand, seven hundred ninety-nine".