516166661587 has 2 divisors, whose sum is σ = 516166661588. Its totient is φ = 516166661586.

The previous prime is 516166661519. The next prime is 516166661671. The reversal of 516166661587 is 785166661615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 516166661587 - 2⁷ = 516166661459 is a prime.

It is not a weakly prime, because it can be changed into another prime (516166661287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258083330793 + 258083330794.

It is an arithmetic number, because the mean of its divisors is an integer number (258083330794).

Almost surely, 2^516166661587 is an apocalyptic number.

516166661587 is a deficient number, since it is larger than the sum of its proper divisors (1).

516166661587 is an equidigital number, since it uses as much as digits as its factorization.

516166661587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10886400, while the sum is 58.

The spelling of 516166661587 in words is "five hundred sixteen billion, one hundred sixty-six million, six hundred sixty-one thousand, five hundred eighty-seven".