523643215253 has 2 divisors, whose sum is σ = 523643215254. Its totient is φ = 523643215252.

The previous prime is 523643215231. The next prime is 523643215331. The reversal of 523643215253 is 352512346325.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 427097539729 + 96545675524 = 653527^2 + 310718^2 .

It is a cyclic number.

It is not a de Polignac number, because 523643215253 - 2¹⁸ = 523642953109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 523643215253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523643215223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261821607626 + 261821607627.

It is an arithmetic number, because the mean of its divisors is an integer number (261821607627).

Almost surely, 2^523643215253 is an apocalyptic number.

It is an amenable number.

523643215253 is a deficient number, since it is larger than the sum of its proper divisors (1).

523643215253 is an equidigital number, since it uses as much as digits as its factorization.

523643215253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648000, while the sum is 41.

The spelling of 523643215253 in words is "five hundred twenty-three billion, six hundred forty-three million, two hundred fifteen thousand, two hundred fifty-three".