43963228821 has 4 divisors (see below), whose sum is σ = 58617638432. Its totient is φ = 29308819212.

The previous prime is 43963228817. The next prime is 43963228847. The reversal of 43963228821 is 12882236934.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 43963228821 - 2² = 43963228817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43963228871) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7327204801 + ... + 7327204806.

It is an arithmetic number, because the mean of its divisors is an integer number (14654409608).

Almost surely, 2^43963228821 is an apocalyptic number.

It is an amenable number.

43963228821 is a deficient number, since it is larger than the sum of its proper divisors (14654409611).

43963228821 is a wasteful number, since it uses less digits than its factorization.

43963228821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14654409610.

The product of its digits is 995328, while the sum is 48.

The spelling of 43963228821 in words is "forty-three billion, nine hundred sixty-three million, two hundred twenty-eight thousand, eight hundred twenty-one".