531057516346663 has 2 divisors, whose sum is σ = 531057516346664. Its totient is φ = 531057516346662.

The previous prime is 531057516346657. The next prime is 531057516346769. The reversal of 531057516346663 is 366643615750135.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 531057516346663 - 2⁵ = 531057516346631 is a prime.

It is a super-3 number, since 3×531057516346663³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531057516376663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265528758173331 + 265528758173332.

It is an arithmetic number, because the mean of its divisors is an integer number (265528758173332).

Almost surely, 2^{531057516346663} is an apocalyptic number.

531057516346663 is a deficient number, since it is larger than the sum of its proper divisors (1).

531057516346663 is an equidigital number, since it uses as much as digits as its factorization.

531057516346663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472000, while the sum is 61.

The spelling of 531057516346663 in words is "five hundred thirty-one trillion, fifty-seven billion, five hundred sixteen million, three hundred forty-six thousand, six hundred sixty-three".