216633426463 has 4 divisors (see below), whose sum is σ = 216634361328. Its totient is φ = 216632491600.

The previous prime is 216633426407. The next prime is 216633426523. The reversal of 216633426463 is 364624336612.

216633426463 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216633426463 is a prime.

It is a super-2 number, since 2×216633426463² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216633456463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169038 + ... + 679588.

It is an arithmetic number, because the mean of its divisors is an integer number (54158590332).

Almost surely, 2^216633426463 is an apocalyptic number.

216633426463 is a deficient number, since it is larger than the sum of its proper divisors (934865).

216633426463 is an equidigital number, since it uses as much as digits as its factorization.

216633426463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934864.

The product of its digits is 2239488, while the sum is 46.

The spelling of 216633426463 in words is "two hundred sixteen billion, six hundred thirty-three million, four hundred twenty-six thousand, four hundred sixty-three".