516487688489 has 2 divisors, whose sum is σ = 516487688490. Its totient is φ = 516487688488.

The previous prime is 516487688467. The next prime is 516487688537. The reversal of 516487688489 is 984886784615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 353507539225 + 162980149264 = 594565^2 + 403708^2 .

It is a cyclic number.

It is not a de Polignac number, because 516487688489 - 2¹² = 516487684393 is a prime.

It is a super-3 number, since 3×516487688489³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (516487688449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258243844244 + 258243844245.

It is an arithmetic number, because the mean of its divisors is an integer number (258243844245).

Almost surely, 2^516487688489 is an apocalyptic number.

It is an amenable number.

516487688489 is a deficient number, since it is larger than the sum of its proper divisors (1).

516487688489 is an equidigital number, since it uses as much as digits as its factorization.

516487688489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 743178240, while the sum is 74.

The spelling of 516487688489 in words is "five hundred sixteen billion, four hundred eighty-seven million, six hundred eighty-eight thousand, four hundred eighty-nine".