43021222778843 has 4 divisors (see below), whose sum is σ = 45285497661960. Its totient is φ = 40756947895728.

The previous prime is 43021222778827. The next prime is 43021222778869. The reversal of 43021222778843 is 34887722212034.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43021222778843 - 2⁴ = 43021222778827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43021222778813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1132137441530 + ... + 1132137441567.

It is an arithmetic number, because the mean of its divisors is an integer number (11321374415490).

Almost surely, 2^{43021222778843} is an apocalyptic number.

43021222778843 is a deficient number, since it is larger than the sum of its proper divisors (2264274883117).

43021222778843 is a wasteful number, since it uses less digits than its factorization.

43021222778843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264274883116.

The product of its (nonzero) digits is 7225344, while the sum is 53.

The spelling of 43021222778843 in words is "forty-three trillion, twenty-one billion, two hundred twenty-two million, seven hundred seventy-eight thousand, eight hundred forty-three".