40443221047 has 2 divisors, whose sum is σ = 40443221048. Its totient is φ = 40443221046.

The previous prime is 40443220997. The next prime is 40443221069. The reversal of 40443221047 is 74012234404.

40443221047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40443221047 - 2⁷ = 40443220919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40443222047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20221610523 + 20221610524.

It is an arithmetic number, because the mean of its divisors is an integer number (20221610524).

Almost surely, 2^40443221047 is an apocalyptic number.

40443221047 is a deficient number, since it is larger than the sum of its proper divisors (1).

40443221047 is an equidigital number, since it uses as much as digits as its factorization.

40443221047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 31.

The spelling of 40443221047 in words is "forty billion, four hundred forty-three million, two hundred twenty-one thousand, forty-seven".