21883387000 has 64 divisors (see below), whose sum is σ = 51326402400. Its totient is φ = 8732966400.

The previous prime is 21883386977. The next prime is 21883387069. The reversal of 21883387000 is 78338812.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407731 + ... + 458269.

Almost surely, 2^21883387000 is an apocalyptic number.

21883387000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21883387000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25663201200).

21883387000 is an abundant number, since it is smaller than the sum of its proper divisors (29443015400).

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

21883387000 is a wasteful number, since it uses less digits than its factorization.

21883387000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50993 (or 50979 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 21883387000 in words is "twenty-one billion, eight hundred eighty-three million, three hundred eighty-seven thousand".