4293221857943 has 2 divisors, whose sum is σ = 4293221857944. Its totient is φ = 4293221857942.

The previous prime is 4293221857921. The next prime is 4293221858011. The reversal of 4293221857943 is 3497581223924.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4293221857943 - 2²² = 4293217663639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4293221857843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2146610928971 + 2146610928972.

It is an arithmetic number, because the mean of its divisors is an integer number (2146610928972).

Almost surely, 2^{4293221857943} is an apocalyptic number.

4293221857943 is a deficient number, since it is larger than the sum of its proper divisors (1).

4293221857943 is an equidigital number, since it uses as much as digits as its factorization.

4293221857943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26127360, while the sum is 59.

The spelling of 4293221857943 in words is "four trillion, two hundred ninety-three billion, two hundred twenty-one million, eight hundred fifty-seven thousand, nine hundred forty-three".