4243522203971 has 2 divisors, whose sum is σ = 4243522203972. Its totient is φ = 4243522203970.

The previous prime is 4243522203959. The next prime is 4243522204007. The reversal of 4243522203971 is 1793022253424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4243522203971 - 2²⁶ = 4243455095107 is a prime.

It is not a weakly prime, because it can be changed into another prime (4243222203971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121761101985 + 2121761101986.

It is an arithmetic number, because the mean of its divisors is an integer number (2121761101986).

Almost surely, 2^{4243522203971} is an apocalyptic number.

4243522203971 is a deficient number, since it is larger than the sum of its proper divisors (1).

4243522203971 is an equidigital number, since it uses as much as digits as its factorization.

4243522203971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 4243522203971 in words is "four trillion, two hundred forty-three billion, five hundred twenty-two million, two hundred three thousand, nine hundred seventy-one".