823255083869 has 2 divisors, whose sum is σ = 823255083870. Its totient is φ = 823255083868.

The previous prime is 823255083787. The next prime is 823255083901. The reversal of 823255083869 is 968380552328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 770050125625 + 53204958244 = 877525^2 + 230662^2 .

It is a cyclic number.

It is not a de Polignac number, because 823255083869 - 2²⁸ = 822986648413 is a prime.

It is a super-2 number, since 2×823255083869² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (823255283869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411627541934 + 411627541935.

It is an arithmetic number, because the mean of its divisors is an integer number (411627541935).

Almost surely, 2^823255083869 is an apocalyptic number.

It is an amenable number.

823255083869 is a deficient number, since it is larger than the sum of its proper divisors (1).

823255083869 is an equidigital number, since it uses as much as digits as its factorization.

823255083869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24883200, while the sum is 59.

The spelling of 823255083869 in words is "eight hundred twenty-three billion, two hundred fifty-five million, eighty-three thousand, eight hundred sixty-nine".