77339993377 has 2 divisors, whose sum is σ = 77339993378. Its totient is φ = 77339993376.

The previous prime is 77339993329. The next prime is 77339993387.

77339993377 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68468048896 + 8871944481 = 261664^2 + 94191^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 77339993377 - 2⁷ = 77339993249 is a prime.

It is a zygodrome in base 10.

It is not a weakly prime, because it can be changed into another prime (77339993327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38669996688 + 38669996689.

It is an arithmetic number, because the mean of its divisors is an integer number (38669996689).

Almost surely, 2^77339993377 is an apocalyptic number.

It is an amenable number.

77339993377 is a deficient number, since it is larger than the sum of its proper divisors (1).

77339993377 is an equidigital number, since it uses as much as digits as its factorization.

77339993377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141776649, while the sum is 67.

The spelling of 77339993377 in words is "seventy-seven billion, three hundred thirty-nine million, nine hundred ninety-three thousand, three hundred seventy-seven".