21116475333 has 8 divisors (see below), whose sum is σ = 31283667200. Its totient is φ = 14077650204.

The previous prime is 21116475311. The next prime is 21116475349. The reversal of 21116475333 is 33357461112.

21116475333 is a `hidden beast` number, since 2 + 1 + 1 + 1 + 647 + 5 + 3 + 3 + 3 = 666.

It is not a de Polignac number, because 21116475333 - 2⁵ = 21116475301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21116475383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391045813 + ... + 391045866.

It is an arithmetic number, because the mean of its divisors is an integer number (3910458400).

Almost surely, 2^21116475333 is an apocalyptic number.

It is an amenable number.

21116475333 is a deficient number, since it is larger than the sum of its proper divisors (10167191867).

21116475333 is an equidigital number, since it uses as much as digits as its factorization.

21116475333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782091688 (or 782091682 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The spelling of 21116475333 in words is "twenty-one billion, one hundred sixteen million, four hundred seventy-five thousand, three hundred thirty-three".