216617787383 has 2 divisors, whose sum is σ = 216617787384. Its totient is φ = 216617787382.

The previous prime is 216617787359. The next prime is 216617787389. The reversal of 216617787383 is 383787716612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216617787383 - 2³⁰ = 215544045559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216617787389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108308893691 + 108308893692.

It is an arithmetic number, because the mean of its divisors is an integer number (108308893692).

Almost surely, 2^216617787383 is an apocalyptic number.

216617787383 is a deficient number, since it is larger than the sum of its proper divisors (1).

216617787383 is an equidigital number, since it uses as much as digits as its factorization.

216617787383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14224896, while the sum is 59.

The spelling of 216617787383 in words is "two hundred sixteen billion, six hundred seventeen million, seven hundred eighty-seven thousand, three hundred eighty-three".