523740664631 has 2 divisors, whose sum is σ = 523740664632. Its totient is φ = 523740664630.

The previous prime is 523740664621. The next prime is 523740664637. The reversal of 523740664631 is 136466047325.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 523740664631 - 2⁶ = 523740664567 is a prime.

It is a super-2 number, since 2×523740664631² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523740664637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261870332315 + 261870332316.

It is an arithmetic number, because the mean of its divisors is an integer number (261870332316).

Almost surely, 2^523740664631 is an apocalyptic number.

523740664631 is a deficient number, since it is larger than the sum of its proper divisors (1).

523740664631 is an equidigital number, since it uses as much as digits as its factorization.

523740664631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 47.

The spelling of 523740664631 in words is "five hundred twenty-three billion, seven hundred forty million, six hundred sixty-four thousand, six hundred thirty-one".