130518715758581 has 2 divisors, whose sum is σ = 130518715758582. Its totient is φ = 130518715758580.

The previous prime is 130518715758499. The next prime is 130518715758631. The reversal of 130518715758581 is 185857517815031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98740590448900 + 31778125309681 = 9936830^2 + 5637209^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130518715758581 is a prime.

It is a super-2 number, since 2×130518715758581² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130518765758581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65259357879290 + 65259357879291.

It is an arithmetic number, because the mean of its divisors is an integer number (65259357879291).

Almost surely, 2^{130518715758581} is an apocalyptic number.

It is an amenable number.

130518715758581 is a deficient number, since it is larger than the sum of its proper divisors (1).

130518715758581 is an equidigital number, since it uses as much as digits as its factorization.

130518715758581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040000, while the sum is 65.

The spelling of 130518715758581 in words is "one hundred thirty trillion, five hundred eighteen billion, seven hundred fifteen million, seven hundred fifty-eight thousand, five hundred eighty-one".