77075494294957 has 2 divisors, whose sum is σ = 77075494294958. Its totient is φ = 77075494294956.

The previous prime is 77075494294943. The next prime is 77075494295077. The reversal of 77075494294957 is 75949249457077.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64180062472516 + 12895431822441 = 8011246^2 + 3591021^2 .

It is an emirp because it is prime and its reverse (75949249457077) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77075494294957 - 2¹⁹ = 77075493770669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77075494294907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38537747147478 + 38537747147479.

It is an arithmetic number, because the mean of its divisors is an integer number (38537747147479).

Almost surely, 2^{77075494294957} is an apocalyptic number.

It is an amenable number.

77075494294957 is a deficient number, since it is larger than the sum of its proper divisors (1).

77075494294957 is an equidigital number, since it uses as much as digits as its factorization.

77075494294957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5601052800, while the sum is 79.

The spelling of 77075494294957 in words is "seventy-seven trillion, seventy-five billion, four hundred ninety-four million, two hundred ninety-four thousand, nine hundred fifty-seven".