77594422832557 has 2 divisors, whose sum is σ = 77594422832558. Its totient is φ = 77594422832556.

The previous prime is 77594422832539. The next prime is 77594422832653. The reversal of 77594422832557 is 75523822449577.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77590482634116 + 3940198441 = 8808546^2 + 62771^2 .

It is an emirp because it is prime and its reverse (75523822449577) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77594422832557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77594422832057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38797211416278 + 38797211416279.

It is an arithmetic number, because the mean of its divisors is an integer number (38797211416279).

Almost surely, 2^{77594422832557} is an apocalyptic number.

It is an amenable number.

77594422832557 is a deficient number, since it is larger than the sum of its proper divisors (1).

77594422832557 is an equidigital number, since it uses as much as digits as its factorization.

77594422832557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1185408000, while the sum is 70.

The spelling of 77594422832557 in words is "seventy-seven trillion, five hundred ninety-four billion, four hundred twenty-two million, eight hundred thirty-two thousand, five hundred fifty-seven".