43221856800 has 72 divisors (see below), whose sum is σ = 140687151696. Its totient is φ = 11525827840.

The previous prime is 43221856763. The next prime is 43221856801. The reversal of 43221856800 is 865812234.

It is not an unprimeable number, because it can be changed into a prime (43221856801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9002154 + ... + 9006953.

It is an arithmetic number, because the mean of its divisors is an integer number (1953988218).

Almost surely, 2^43221856800 is an apocalyptic number.

43221856800 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43221856800 is an abundant number, since it is smaller than the sum of its proper divisors (97465294896).

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

43221856800 is a wasteful number, since it uses less digits than its factorization.

43221856800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18009130 (or 18009117 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 43221856800 in words is "forty-three billion, two hundred twenty-one million, eight hundred fifty-six thousand, eight hundred".