523312636564717 has 2 divisors, whose sum is σ = 523312636564718. Its totient is φ = 523312636564716.

The previous prime is 523312636564699. The next prime is 523312636564793. The reversal of 523312636564717 is 717465636213325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 459124642713636 + 64187993851081 = 21427194^2 + 8011741^2 .

It is a cyclic number.

It is not a de Polignac number, because 523312636564717 - 2²³ = 523312628176109 is a prime.

It is a super-2 number, since 2×523312636564717² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523312636562717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261656318282358 + 261656318282359.

It is an arithmetic number, because the mean of its divisors is an integer number (261656318282359).

Almost surely, 2^{523312636564717} is an apocalyptic number.

It is an amenable number.

523312636564717 is a deficient number, since it is larger than the sum of its proper divisors (1).

523312636564717 is an equidigital number, since it uses as much as digits as its factorization.

523312636564717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 114307200, while the sum is 61.

The spelling of 523312636564717 in words is "five hundred twenty-three trillion, three hundred twelve billion, six hundred thirty-six million, five hundred sixty-four thousand, seven hundred seventeen".