40443444004129 has 2 divisors, whose sum is σ = 40443444004130. Its totient is φ = 40443444004128.

The previous prime is 40443444004127. The next prime is 40443444004241. The reversal of 40443444004129 is 92140044434404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37659418272529 + 2784025731600 = 6136727^2 + 1668540^2 .

It is a cyclic number.

It is not a de Polignac number, because 40443444004129 - 2¹ = 40443444004127 is a prime.

Together with 40443444004127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40443444004123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20221722002064 + 20221722002065.

It is an arithmetic number, because the mean of its divisors is an integer number (20221722002065).

Almost surely, 2^{40443444004129} is an apocalyptic number.

It is an amenable number.

40443444004129 is a deficient number, since it is larger than the sum of its proper divisors (1).

40443444004129 is an equidigital number, since it uses as much as digits as its factorization.

40443444004129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 884736, while the sum is 43.

The spelling of 40443444004129 in words is "forty trillion, four hundred forty-three billion, four hundred forty-four million, four thousand, one hundred twenty-nine".