216896906519 has 2 divisors, whose sum is σ = 216896906520. Its totient is φ = 216896906518.

The previous prime is 216896906507. The next prime is 216896906533. The reversal of 216896906519 is 915609698612.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216896906519 - 2⁸ = 216896906263 is a prime.

It is a super-3 number, since 3×216896906519³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216896906549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108448453259 + 108448453260.

It is an arithmetic number, because the mean of its divisors is an integer number (108448453260).

Almost surely, 2^216896906519 is an apocalyptic number.

216896906519 is a deficient number, since it is larger than the sum of its proper divisors (1).

216896906519 is an equidigital number, since it uses as much as digits as its factorization.

216896906519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12597120, while the sum is 62.

The spelling of 216896906519 in words is "two hundred sixteen billion, eight hundred ninety-six million, nine hundred six thousand, five hundred nineteen".