216284973941 has 2 divisors, whose sum is σ = 216284973942. Its totient is φ = 216284973940.

The previous prime is 216284973929. The next prime is 216284973997. The reversal of 216284973941 is 149379482612.

It is a happy number.

It is an a-pointer prime, because the next prime (216284973997) can be obtained adding 216284973941 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181522863025 + 34762110916 = 426055^2 + 186446^2 .

It is a cyclic number.

It is not a de Polignac number, because 216284973941 - 2¹⁴ = 216284957557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216284973241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108142486970 + 108142486971.

It is an arithmetic number, because the mean of its divisors is an integer number (108142486971).

Almost surely, 2^216284973941 is an apocalyptic number.

It is an amenable number.

216284973941 is a deficient number, since it is larger than the sum of its proper divisors (1).

216284973941 is an equidigital number, since it uses as much as digits as its factorization.

216284973941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 56.

The spelling of 216284973941 in words is "two hundred sixteen billion, two hundred eighty-four million, nine hundred seventy-three thousand, nine hundred forty-one".