77730053462797 has 2 divisors, whose sum is σ = 77730053462798. Its totient is φ = 77730053462796.

The previous prime is 77730053462779. The next prime is 77730053462839. The reversal of 77730053462797 is 79726435003777.

Together with previous prime (77730053462779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70861612828356 + 6868440634441 = 8417934^2 + 2620771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77730053462797 is a prime.

It is a super-2 number, since 2×77730053462797² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77730053462717) 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, 38865026731398 + 38865026731399.

It is an arithmetic number, because the mean of its divisors is an integer number (38865026731399).

Almost surely, 2^{77730053462797} is an apocalyptic number.

It is an amenable number.

77730053462797 is a deficient number, since it is larger than the sum of its proper divisors (1).

77730053462797 is an equidigital number, since it uses as much as digits as its factorization.

77730053462797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326728080, while the sum is 67.

The spelling of 77730053462797 in words is "seventy-seven trillion, seven hundred thirty billion, fifty-three million, four hundred sixty-two thousand, seven hundred ninety-seven".