43442551049 has 2 divisors, whose sum is σ = 43442551050. Its totient is φ = 43442551048.

The previous prime is 43442551021. The next prime is 43442551051. The reversal of 43442551049 is 94015524434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36392429824 + 7050121225 = 190768^2 + 83965^2 .

It is a cyclic number.

It is not a de Polignac number, because 43442551049 - 2³² = 39147583753 is a prime.

Together with 43442551051, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 43442550997 and 43442551015.

It is not a weakly prime, because it can be changed into another prime (43442551099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21721275524 + 21721275525.

It is an arithmetic number, because the mean of its divisors is an integer number (21721275525).

Almost surely, 2^43442551049 is an apocalyptic number.

It is an amenable number.

43442551049 is a deficient number, since it is larger than the sum of its proper divisors (1).

43442551049 is an equidigital number, since it uses as much as digits as its factorization.

43442551049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 43442551049 in words is "forty-three billion, four hundred forty-two million, five hundred fifty-one thousand, forty-nine".