43213278813 has 8 divisors (see below), whose sum is σ = 57652908768. Its totient is φ = 28791250704.

The previous prime is 43213278781. The next prime is 43213278863. The reversal of 43213278813 is 31887231234.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43213278813 - 2⁵ = 43213278781 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43213278863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4394731 + ... + 4404552.

It is an arithmetic number, because the mean of its divisors is an integer number (7206613596).

Almost surely, 2^43213278813 is an apocalyptic number.

It is an amenable number.

43213278813 is a deficient number, since it is larger than the sum of its proper divisors (14439629955).

43213278813 is a wasteful number, since it uses less digits than its factorization.

43213278813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8800923.

The product of its digits is 193536, while the sum is 42.

The spelling of 43213278813 in words is "forty-three billion, two hundred thirteen million, two hundred seventy-eight thousand, eight hundred thirteen".