22131964800 has 1152 divisors, whose sum is σ = 93361212000. Its totient is φ = 5109350400.

The previous prime is 22131964781. The next prime is 22131964823. The reversal of 22131964800 is 846913122.

22131964800 is a `hidden beast` number, since 2 + 2 + 1 + 3 + 1 + 9 + 648 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 303177564 + ... + 303177636.

Almost surely, 2^22131964800 is an apocalyptic number.

22131964800 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 22131964800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46680606000).

22131964800 is an abundant number, since it is smaller than the sum of its proper divisors (71229247200).

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

22131964800 is a wasteful number, since it uses less digits than its factorization.

22131964800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 22131964800 in words is "twenty-two billion, one hundred thirty-one million, nine hundred sixty-four thousand, eight hundred".