43321224661 has 32 divisors (see below), whose sum is σ = 56231739648. Its totient is φ = 32727383040.

The previous prime is 43321224647. The next prime is 43321224673. The reversal of 43321224661 is 16642212334.

43321224661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43321224661 - 2¹³ = 43321216469 is a prime.

It is a super-2 number, since 2×43321224661² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43321222661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 331486 + ... + 443311.

It is an arithmetic number, because the mean of its divisors is an integer number (1757241864).

Almost surely, 2^43321224661 is an apocalyptic number.

It is an amenable number.

43321224661 is a deficient number, since it is larger than the sum of its proper divisors (12910514987).

43321224661 is a wasteful number, since it uses less digits than its factorization.

43321224661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774861.

The product of its digits is 41472, while the sum is 34.

Adding to 43321224661 its reverse (16642212334), we get a palindrome (59963436995).

The spelling of 43321224661 in words is "forty-three billion, three hundred twenty-one million, two hundred twenty-four thousand, six hundred sixty-one".