22043343991 has 2 divisors, whose sum is σ = 22043343992. Its totient is φ = 22043343990.

The previous prime is 22043343979. The next prime is 22043344007. The reversal of 22043343991 is 19934334022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22043343991 - 2²¹ = 22041246839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22043343191) 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, 11021671995 + 11021671996.

It is an arithmetic number, because the mean of its divisors is an integer number (11021671996).

Almost surely, 2^22043343991 is an apocalyptic number.

22043343991 is a deficient number, since it is larger than the sum of its proper divisors (1).

22043343991 is an equidigital number, since it uses as much as digits as its factorization.

22043343991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 40.

The spelling of 22043343991 in words is "twenty-two billion, forty-three million, three hundred forty-three thousand, nine hundred ninety-one".