518352721919 has 2 divisors, whose sum is σ = 518352721920. Its totient is φ = 518352721918.

The previous prime is 518352721907. The next prime is 518352721921. The reversal of 518352721919 is 919127253815.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 518352721919 - 2²⁸ = 518084286463 is a prime.

It is a super-2 number, since 2×518352721919² (a number of 24 digits) contains 22 as substring.

Together with 518352721921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (518352721969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259176360959 + 259176360960.

It is an arithmetic number, because the mean of its divisors is an integer number (259176360960).

Almost surely, 2^518352721919 is an apocalyptic number.

518352721919 is a deficient number, since it is larger than the sum of its proper divisors (1).

518352721919 is an equidigital number, since it uses as much as digits as its factorization.

518352721919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 53.

The spelling of 518352721919 in words is "five hundred eighteen billion, three hundred fifty-two million, seven hundred twenty-one thousand, nine hundred nineteen".