21763226368 has 72 divisors (see below), whose sum is σ = 46821957056. Its totient is φ = 10036224000.

The previous prime is 21763226357. The next prime is 21763226371. The reversal of 21763226368 is 86362236712.

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, 5991913 + ... + 5995543.

Almost surely, 2^21763226368 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 21763226368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23410978528).

21763226368 is an abundant number, since it is smaller than the sum of its proper divisors (25058730688).

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

21763226368 is a wasteful number, since it uses less digits than its factorization.

21763226368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5461 (or 5447 counting only the distinct ones).

The product of its digits is 870912, while the sum is 46.

The spelling of 21763226368 in words is "twenty-one billion, seven hundred sixty-three million, two hundred twenty-six thousand, three hundred sixty-eight".