21633389485632 has 112 divisors (see below), whose sum is σ = 63623888479680. Its totient is φ = 7208212460544.

The previous prime is 21633389485613. The next prime is 21633389485633. The reversal of 21633389485632 is 23658498333612.

It is a happy number.

21633389485632 is a `hidden beast` number, since 2 + 1 + 6 + 33 + 38 + 9 + 4 + 8 + 563 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 21633389485632.

It is not an unprimeable number, because it can be changed into a prime (21633389485633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1742143 + ... + 6804545.

Almost surely, 2^{21633389485632} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21633389485632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31811944239840).

21633389485632 is an abundant number, since it is smaller than the sum of its proper divisors (41990498994048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21633389485632 is a wasteful number, since it uses less digits than its factorization.

21633389485632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5064897 (or 5064881 counting only the distinct ones).

The product of its digits is 134369280, while the sum is 63.

The spelling of 21633389485632 in words is "twenty-one trillion, six hundred thirty-three billion, three hundred eighty-nine million, four hundred eighty-five thousand, six hundred thirty-two".