216880501817927 has 2 divisors, whose sum is σ = 216880501817928. Its totient is φ = 216880501817926.

The previous prime is 216880501817873. The next prime is 216880501818007. The reversal of 216880501817927 is 729718105088612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216880501817927 - 2¹⁶ = 216880501752391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216880501814927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108440250908963 + 108440250908964.

It is an arithmetic number, because the mean of its divisors is an integer number (108440250908964).

Almost surely, 2^{216880501817927} is an apocalyptic number.

216880501817927 is a deficient number, since it is larger than the sum of its proper divisors (1).

216880501817927 is an equidigital number, since it uses as much as digits as its factorization.

216880501817927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27095040, while the sum is 65.

The spelling of 216880501817927 in words is "two hundred sixteen trillion, eight hundred eighty billion, five hundred one million, eight hundred seventeen thousand, nine hundred twenty-seven".