77857186233803 has 2 divisors, whose sum is σ = 77857186233804. Its totient is φ = 77857186233802.

The previous prime is 77857186233733. The next prime is 77857186233851. The reversal of 77857186233803 is 30833268175877.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77857186233803 is a prime.

It is not a weakly prime, because it can be changed into another prime (77857186233703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38928593116901 + 38928593116902.

It is an arithmetic number, because the mean of its divisors is an integer number (38928593116902).

Almost surely, 2^{77857186233803} is an apocalyptic number.

77857186233803 is a deficient number, since it is larger than the sum of its proper divisors (1).

77857186233803 is an equidigital number, since it uses as much as digits as its factorization.

77857186233803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 284497920, while the sum is 68.

The spelling of 77857186233803 in words is "seventy-seven trillion, eight hundred fifty-seven billion, one hundred eighty-six million, two hundred thirty-three thousand, eight hundred three".