523661967359 has 2 divisors, whose sum is σ = 523661967360. Its totient is φ = 523661967358.

The previous prime is 523661967347. The next prime is 523661967373. The reversal of 523661967359 is 953769166325.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 523661967359 - 2³² = 519367000063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523661967659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261830983679 + 261830983680.

It is an arithmetic number, because the mean of its divisors is an integer number (261830983680).

Almost surely, 2^523661967359 is an apocalyptic number.

523661967359 is a deficient number, since it is larger than the sum of its proper divisors (1).

523661967359 is an equidigital number, since it uses as much as digits as its factorization.

523661967359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55112400, while the sum is 62.

The spelling of 523661967359 in words is "five hundred twenty-three billion, six hundred sixty-one million, nine hundred sixty-seven thousand, three hundred fifty-nine".