823316432777 has 2 divisors, whose sum is σ = 823316432778. Its totient is φ = 823316432776.

The previous prime is 823316432747. The next prime is 823316432831. The reversal of 823316432777 is 777234613328.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 610923571456 + 212392861321 = 781616^2 + 460861^2 .

It is a cyclic number.

It is not a de Polignac number, because 823316432777 - 2¹⁰ = 823316431753 is a prime.

It is not a weakly prime, because it can be changed into another prime (823316432747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411658216388 + 411658216389.

It is an arithmetic number, because the mean of its divisors is an integer number (411658216389).

Almost surely, 2^823316432777 is an apocalyptic number.

It is an amenable number.

823316432777 is a deficient number, since it is larger than the sum of its proper divisors (1).

823316432777 is an equidigital number, since it uses as much as digits as its factorization.

823316432777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7112448, while the sum is 53.

The spelling of 823316432777 in words is "eight hundred twenty-three billion, three hundred sixteen million, four hundred thirty-two thousand, seven hundred seventy-seven".