823666677859 has 2 divisors, whose sum is σ = 823666677860. Its totient is φ = 823666677858.

The previous prime is 823666677781. The next prime is 823666677871. The reversal of 823666677859 is 958776666328.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 823666677859 - 2³³ = 815076743267 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 823666677791 and 823666677800.

It is not a weakly prime, because it can be changed into another prime (823666617859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411833338929 + 411833338930.

It is an arithmetic number, because the mean of its divisors is an integer number (411833338930).

Almost surely, 2^823666677859 is an apocalyptic number.

823666677859 is a deficient number, since it is larger than the sum of its proper divisors (1).

823666677859 is an equidigital number, since it uses as much as digits as its factorization.

823666677859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1097349120, while the sum is 73.

The spelling of 823666677859 in words is "eight hundred twenty-three billion, six hundred sixty-six million, six hundred seventy-seven thousand, eight hundred fifty-nine".