21738883000 has 64 divisors (see below), whose sum is σ = 50924596320. Its totient is φ = 8686048000.

The previous prime is 21738882967. The next prime is 21738883007. The reversal of 21738883000 is 38883712.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21738883007) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 941595 + ... + 964405.

Almost surely, 2^21738883000 is an apocalyptic number.

21738883000 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 21738883000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25462298160).

21738883000 is an abundant number, since it is smaller than the sum of its proper divisors (29185713320).

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

21738883000 is a wasteful number, since it uses less digits than its factorization.

21738883000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23785 (or 23771 counting only the distinct ones).

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

The spelling of 21738883000 in words is "twenty-one billion, seven hundred thirty-eight million, eight hundred eighty-three thousand".