823609888253 has 2 divisors, whose sum is σ = 823609888254. Its totient is φ = 823609888252.

The previous prime is 823609888181. The next prime is 823609888331. The reversal of 823609888253 is 352888906328.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 559679045689 + 263930842564 = 748117^2 + 513742^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-823609888253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (823609888753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411804944126 + 411804944127.

It is an arithmetic number, because the mean of its divisors is an integer number (411804944127).

Almost surely, 2^823609888253 is an apocalyptic number.

It is an amenable number.

823609888253 is a deficient number, since it is larger than the sum of its proper divisors (1).

823609888253 is an equidigital number, since it uses as much as digits as its factorization.

823609888253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39813120, while the sum is 62.

The spelling of 823609888253 in words is "eight hundred twenty-three billion, six hundred nine million, eight hundred eighty-eight thousand, two hundred fifty-three".