21633286936166 has 16 divisors (see below), whose sum is σ = 33000224478480. Its totient is φ = 10633215390720.

The previous prime is 21633286936043. The next prime is 21633286936199. The reversal of 21633286936166 is 66163968233612.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21633286936099 and 21633286936108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13475810 + ... + 14995466.

It is an arithmetic number, because the mean of its divisors is an integer number (2062514029905).

Almost surely, 2^{21633286936166} is an apocalyptic number.

21633286936166 is a deficient number, since it is larger than the sum of its proper divisors (11366937542314).

21633286936166 is a wasteful number, since it uses less digits than its factorization.

21633286936166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640359.

The product of its digits is 60466176, while the sum is 62.

The spelling of 21633286936166 in words is "twenty-one trillion, six hundred thirty-three billion, two hundred eighty-six million, nine hundred thirty-six thousand, one hundred sixty-six".