4431366894191 has 2 divisors, whose sum is σ = 4431366894192. Its totient is φ = 4431366894190.

The previous prime is 4431366894179. The next prime is 4431366894233. The reversal of 4431366894191 is 1914986631344.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4431366894191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4431366894191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4431366894151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2215683447095 + 2215683447096.

It is an arithmetic number, because the mean of its divisors is an integer number (2215683447096).

Almost surely, 2^{4431366894191} is an apocalyptic number.

4431366894191 is a deficient number, since it is larger than the sum of its proper divisors (1).

4431366894191 is an equidigital number, since it uses as much as digits as its factorization.

4431366894191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13436928, while the sum is 59.

The spelling of 4431366894191 in words is "four trillion, four hundred thirty-one billion, three hundred sixty-six million, eight hundred ninety-four thousand, one hundred ninety-one".