4224172042591 has 2 divisors, whose sum is σ = 4224172042592. Its totient is φ = 4224172042590.

The previous prime is 4224172042537. The next prime is 4224172042603. The reversal of 4224172042591 is 1952402714224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4224172042591 - 2²⁵ = 4224138488159 is a prime.

It is a super-2 number, since 2×4224172042591² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4224172042691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2112086021295 + 2112086021296.

It is an arithmetic number, because the mean of its divisors is an integer number (2112086021296).

Almost surely, 2^{4224172042591} is an apocalyptic number.

4224172042591 is a deficient number, since it is larger than the sum of its proper divisors (1).

4224172042591 is an equidigital number, since it uses as much as digits as its factorization.

4224172042591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 4224172042591 in words is "four trillion, two hundred twenty-four billion, one hundred seventy-two million, forty-two thousand, five hundred ninety-one".