516987417589 has 2 divisors, whose sum is σ = 516987417590. Its totient is φ = 516987417588.

The previous prime is 516987417563. The next prime is 516987417631. The reversal of 516987417589 is 985714789615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 271709902564 + 245277515025 = 521258^2 + 495255^2 .

It is a cyclic number.

It is not a de Polignac number, because 516987417589 - 2¹¹ = 516987415541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516987417689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258493708794 + 258493708795.

It is an arithmetic number, because the mean of its divisors is an integer number (258493708795).

Almost surely, 2^516987417589 is an apocalyptic number.

It is an amenable number.

516987417589 is a deficient number, since it is larger than the sum of its proper divisors (1).

516987417589 is an equidigital number, since it uses as much as digits as its factorization.

516987417589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 152409600, while the sum is 70.

The spelling of 516987417589 in words is "five hundred sixteen billion, nine hundred eighty-seven million, four hundred seventeen thousand, five hundred eighty-nine".