518104055869 has 2 divisors, whose sum is σ = 518104055870. Its totient is φ = 518104055868.

The previous prime is 518104055863. The next prime is 518104055927. The reversal of 518104055869 is 968550401815.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 306237171769 + 211866884100 = 553387^2 + 460290^2 .

It is a cyclic number.

It is not a de Polignac number, because 518104055869 - 2⁷ = 518104055741 is a prime.

It is a super-2 number, since 2×518104055869² (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 (518104055863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259052027934 + 259052027935.

It is an arithmetic number, because the mean of its divisors is an integer number (259052027935).

Almost surely, 2^518104055869 is an apocalyptic number.

It is an amenable number.

518104055869 is a deficient number, since it is larger than the sum of its proper divisors (1).

518104055869 is an equidigital number, since it uses as much as digits as its factorization.

518104055869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728000, while the sum is 52.

The spelling of 518104055869 in words is "five hundred eighteen billion, one hundred four million, fifty-five thousand, eight hundred sixty-nine".