43440221433 has 16 divisors (see below), whose sum is σ = 66213504000. Its totient is φ = 24815903376.

The previous prime is 43440221413. The next prime is 43440221453. The reversal of 43440221433 is 33412204434.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (43440221413) and next prime (43440221453).

It is not a de Polignac number, because 43440221433 - 2³⁰ = 42366479609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43440221433.

It is not an unprimeable number, because it can be changed into a prime (43440221413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219183 + ... + 367316.

It is an arithmetic number, because the mean of its divisors is an integer number (4138344000).

Almost surely, 2^43440221433 is an apocalyptic number.

It is an amenable number.

43440221433 is a deficient number, since it is larger than the sum of its proper divisors (22773282567).

43440221433 is a wasteful number, since it uses less digits than its factorization.

43440221433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590036.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 43440221433 its reverse (33412204434), we get a palindrome (76852425867).

The spelling of 43440221433 in words is "forty-three billion, four hundred forty million, two hundred twenty-one thousand, four hundred thirty-three".