40445242273 has 2 divisors, whose sum is σ = 40445242274. Its totient is φ = 40445242272.

The previous prime is 40445242267. The next prime is 40445242303. The reversal of 40445242273 is 37224254404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33625290384 + 6819951889 = 183372^2 + 82583^2 .

It is a cyclic number.

It is not a de Polignac number, because 40445242273 - 2⁵ = 40445242241 is a prime.

It is not a weakly prime, because it can be changed into another prime (40445242073) 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, 20222621136 + 20222621137.

It is an arithmetic number, because the mean of its divisors is an integer number (20222621137).

Almost surely, 2^40445242273 is an apocalyptic number.

It is an amenable number.

40445242273 is a deficient number, since it is larger than the sum of its proper divisors (1).

40445242273 is an equidigital number, since it uses as much as digits as its factorization.

40445242273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 215040, while the sum is 37.

Adding to 40445242273 its reverse (37224254404), we get a palindrome (77669496677).

The spelling of 40445242273 in words is "forty billion, four hundred forty-five million, two hundred forty-two thousand, two hundred seventy-three".