42445544233 has 2 divisors, whose sum is σ = 42445544234. Its totient is φ = 42445544232.

The previous prime is 42445544221. The next prime is 42445544237. The reversal of 42445544233 is 33244554424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25626566889 + 16818977344 = 160083^2 + 129688^2 .

It is a cyclic number.

It is not a de Polignac number, because 42445544233 - 2⁵ = 42445544201 is a prime.

It is not a weakly prime, because it can be changed into another prime (42445544237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21222772116 + 21222772117.

It is an arithmetic number, because the mean of its divisors is an integer number (21222772117).

Almost surely, 2^42445544233 is an apocalyptic number.

It is an amenable number.

42445544233 is a deficient number, since it is larger than the sum of its proper divisors (1).

42445544233 is an equidigital number, since it uses as much as digits as its factorization.

42445544233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 921600, while the sum is 40.

The spelling of 42445544233 in words is "forty-two billion, four hundred forty-five million, five hundred forty-four thousand, two hundred thirty-three".