216373715582579 has 2 divisors, whose sum is σ = 216373715582580. Its totient is φ = 216373715582578.

The previous prime is 216373715582543. The next prime is 216373715582597. The reversal of 216373715582579 is 975285517373612.

Together with next prime (216373715582597) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216373715582579 is a prime.

It is a super-2 number, since 2×216373715582579² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (216373715582509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108186857791289 + 108186857791290.

It is an arithmetic number, because the mean of its divisors is an integer number (108186857791290).

Almost surely, 2^{216373715582579} is an apocalyptic number.

216373715582579 is a deficient number, since it is larger than the sum of its proper divisors (1).

216373715582579 is an equidigital number, since it uses as much as digits as its factorization.

216373715582579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 666792000, while the sum is 71.

The spelling of 216373715582579 in words is "two hundred sixteen trillion, three hundred seventy-three billion, seven hundred fifteen million, five hundred eighty-two thousand, five hundred seventy-nine".