77788673083057 has 2 divisors, whose sum is σ = 77788673083058. Its totient is φ = 77788673083056.

The previous prime is 77788673082979. The next prime is 77788673083103. The reversal of 77788673083057 is 75038037688777.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54967262548081 + 22821410534976 = 7413991^2 + 4777176^2 .

It is a cyclic number.

It is not a de Polignac number, because 77788673083057 - 2¹⁹ = 77788672558769 is a prime.

It is not a weakly prime, because it can be changed into another prime (77788673083157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38894336541528 + 38894336541529.

It is an arithmetic number, because the mean of its divisors is an integer number (38894336541529).

Almost surely, 2^{77788673083057} is an apocalyptic number.

It is an amenable number.

77788673083057 is a deficient number, since it is larger than the sum of its proper divisors (1).

77788673083057 is an equidigital number, since it uses as much as digits as its factorization.

77788673083057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2323399680, while the sum is 76.

The spelling of 77788673083057 in words is "seventy-seven trillion, seven hundred eighty-eight billion, six hundred seventy-three million, eighty-three thousand, fifty-seven".