3216116591 has 2 divisors, whose sum is σ = 3216116592. Its totient is φ = 3216116590.

The previous prime is 3216116539. The next prime is 3216116653. The reversal of 3216116591 is 1956116123.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3216116591 is a prime.

It is a super-2 number, since 2×3216116591² = 20686811853810922562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3216116291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608058295 + 1608058296.

It is an arithmetic number, because the mean of its divisors is an integer number (1608058296).

Almost surely, 2^3216116591 is an apocalyptic number.

3216116591 is a deficient number, since it is larger than the sum of its proper divisors (1).

3216116591 is an equidigital number, since it uses as much as digits as its factorization.

3216116591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 35.

The square root of 3216116591 is about 56710.8154675984. The cubic root of 3216116591 is about 1476.0823756668.

The spelling of 3216116591 in words is "three billion, two hundred sixteen million, one hundred sixteen thousand, five hundred ninety-one".