216366942033 has 24 divisors (see below), whose sum is σ = 341071064256. Its totient is φ = 131081781600.

The previous prime is 216366942031. The next prime is 216366942079. The reversal of 216366942033 is 330249663612.

216366942033 is a `hidden beast` number, since 2 + 1 + 636 + 6 + 9 + 4 + 2 + 0 + 3 + 3 = 666.

It is not a de Polignac number, because 216366942033 - 2¹ = 216366942031 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 216366942033.

It is not an unprimeable number, because it can be changed into a prime (216366942031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150778 + ... + 674883.

It is an arithmetic number, because the mean of its divisors is an integer number (14211294344).

Almost surely, 2^216366942033 is an apocalyptic number.

It is an amenable number.

216366942033 is a deficient number, since it is larger than the sum of its proper divisors (124704122223).

216366942033 is a wasteful number, since it uses less digits than its factorization.

216366942033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828325 (or 828322 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 45.

The spelling of 216366942033 in words is "two hundred sixteen billion, three hundred sixty-six million, nine hundred forty-two thousand, thirty-three".