21863033088 has 288 divisors, whose sum is σ = 68843228160. Its totient is φ = 6094725120.

The previous prime is 21863033083. The next prime is 21863033131. The reversal of 21863033088 is 88033036812.

It is not an unprimeable number, because it can be changed into a prime (21863033081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4360503 + ... + 4365513.

Almost surely, 2^21863033088 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 21863033088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34421614080).

21863033088 is an abundant number, since it is smaller than the sum of its proper divisors (46980195072).

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

21863033088 is a wasteful number, since it uses less digits than its factorization.

21863033088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5085 (or 5071 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 21863033088 in words is "twenty-one billion, eight hundred sixty-three million, thirty-three thousand, eighty-eight".