43213278812 has 12 divisors (see below), whose sum is σ = 82498077816. Its totient is φ = 19642399440.

The previous prime is 43213278781. The next prime is 43213278863. The reversal of 43213278812 is 21887231234.

It is a self number, because there is not a number n which added to its sum of digits gives 43213278812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491059943 + ... + 491060030.

It is an arithmetic number, because the mean of its divisors is an integer number (6874839818).

Almost surely, 2^43213278812 is an apocalyptic number.

It is an amenable number.

43213278812 is a deficient number, since it is larger than the sum of its proper divisors (39284799004).

43213278812 is a wasteful number, since it uses less digits than its factorization.

43213278812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982119988 (or 982119986 counting only the distinct ones).

The product of its digits is 129024, while the sum is 41.

The spelling of 43213278812 in words is "forty-three billion, two hundred thirteen million, two hundred seventy-eight thousand, eight hundred twelve".