21335789622 has 96 divisors (see below), whose sum is σ = 50879816064. Its totient is φ = 5943974400.

The previous prime is 21335789617. The next prime is 21335789647. The reversal of 21335789622 is 22698753312.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 10251622 + ... + 10253702.

It is an arithmetic number, because the mean of its divisors is an integer number (529998084).

Almost surely, 2^21335789622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21335789622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25439908032).

21335789622 is an abundant number, since it is smaller than the sum of its proper divisors (29544026442).

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

21335789622 is a wasteful number, since it uses less digits than its factorization.

21335789622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2954 (or 2947 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The spelling of 21335789622 in words is "twenty-one billion, three hundred thirty-five million, seven hundred eighty-nine thousand, six hundred twenty-two".