43443612066 has 16 divisors (see below), whose sum is σ = 86959584288. Its totient is φ = 14469144000.

The previous prime is 43443612053. The next prime is 43443612089. The reversal of 43443612066 is 66021634434.

It is a super-2 number, since 2×43443612066² (a number of 22 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 3007200 + ... + 3021611.

It is an arithmetic number, because the mean of its divisors is an integer number (5434974018).

Almost surely, 2^43443612066 is an apocalyptic number.

43443612066 is an abundant number, since it is smaller than the sum of its proper divisors (43515972222).

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

43443612066 is a wasteful number, since it uses less digits than its factorization.

43443612066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6030017.

The product of its (nonzero) digits is 248832, while the sum is 39.

The spelling of 43443612066 in words is "forty-three billion, four hundred forty-three million, six hundred twelve thousand, sixty-six".