216686881063883 has 2 divisors, whose sum is σ = 216686881063884. Its totient is φ = 216686881063882.

The previous prime is 216686881063871. The next prime is 216686881063949. The reversal of 216686881063883 is 388360188686612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216686881063883 - 2¹⁶ = 216686880998347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216686881063883.

It is not a weakly prime, because it can be changed into another prime (216686881063813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108343440531941 + 108343440531942.

It is an arithmetic number, because the mean of its divisors is an integer number (108343440531942).

Almost surely, 2^{216686881063883} is an apocalyptic number.

216686881063883 is a deficient number, since it is larger than the sum of its proper divisors (1).

216686881063883 is an equidigital number, since it uses as much as digits as its factorization.

216686881063883 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 764411904, while the sum is 74.

The spelling of 216686881063883 in words is "two hundred sixteen trillion, six hundred eighty-six billion, eight hundred eighty-one million, sixty-three thousand, eight hundred eighty-three".