216181831058383 has 2 divisors, whose sum is σ = 216181831058384. Its totient is φ = 216181831058382.

The previous prime is 216181831058381. The next prime is 216181831058447. The reversal of 216181831058383 is 383850138181612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216181831058383 - 2¹ = 216181831058381 is a prime.

Together with 216181831058381, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216181831058381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108090915529191 + 108090915529192.

It is an arithmetic number, because the mean of its divisors is an integer number (108090915529192).

Almost surely, 2^{216181831058383} is an apocalyptic number.

216181831058383 is a deficient number, since it is larger than the sum of its proper divisors (1).

216181831058383 is an equidigital number, since it uses as much as digits as its factorization.

216181831058383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6635520, while the sum is 58.

The spelling of 216181831058383 in words is "two hundred sixteen trillion, one hundred eighty-one billion, eight hundred thirty-one million, fifty-eight thousand, three hundred eighty-three".