43221354066 has 96 divisors (see below), whose sum is σ = 104861952000. Its totient is φ = 12753750240.

The previous prime is 43221354041. The next prime is 43221354097. The reversal of 43221354066 is 66045312234.

43221354066 is a `hidden beast` number, since 4 + 32 + 21 + 3 + 540 + 66 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 43221354066.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1840225 + ... + 1863563.

It is an arithmetic number, because the mean of its divisors is an integer number (1092312000).

Almost surely, 2^43221354066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43221354066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52430976000).

43221354066 is an abundant number, since it is smaller than the sum of its proper divisors (61640597934).

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

43221354066 is a wasteful number, since it uses less digits than its factorization.

43221354066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23604 (or 23601 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 43221354066 in words is "forty-three billion, two hundred twenty-one million, three hundred fifty-four thousand, sixty-six".