21899268000 has 576 divisors, whose sum is σ = 82758049920. Its totient is φ = 5624640000.

The previous prime is 21899267963. The next prime is 21899268023. The reversal of 21899268000 is 86299812.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 103787895 + ... + 103788105.

It is an arithmetic number, because the mean of its divisors is an integer number (143677170).

Almost surely, 2^21899268000 is an apocalyptic number.

21899268000 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 21899268000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41379024960).

21899268000 is an abundant number, since it is smaller than the sum of its proper divisors (60858781920).

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

21899268000 is a wasteful number, since it uses less digits than its factorization.

21899268000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 21899268000 in words is "twenty-one billion, eight hundred ninety-nine million, two hundred sixty-eight thousand".