518945742631 has 2 divisors, whose sum is σ = 518945742632. Its totient is φ = 518945742630.

The previous prime is 518945742619. The next prime is 518945742659. The reversal of 518945742631 is 136247549815.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 518945742631 - 2⁷ = 518945742503 is a prime.

It is a super-2 number, since 2×518945742631² (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 (518945748631) 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, 259472871315 + 259472871316.

It is an arithmetic number, because the mean of its divisors is an integer number (259472871316).

Almost surely, 2^518945742631 is an apocalyptic number.

518945742631 is a deficient number, since it is larger than the sum of its proper divisors (1).

518945742631 is an equidigital number, since it uses as much as digits as its factorization.

518945742631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7257600, while the sum is 55.

The spelling of 518945742631 in words is "five hundred eighteen billion, nine hundred forty-five million, seven hundred forty-two thousand, six hundred thirty-one".