42444320263 has 2 divisors, whose sum is σ = 42444320264. Its totient is φ = 42444320262.

The previous prime is 42444320231. The next prime is 42444320293. The reversal of 42444320263 is 36202344424.

It is a happy number.

42444320263 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 42444320263 - 2⁵ = 42444320231 is a prime.

It is a super-2 number, since 2×42444320263² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42444320203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21222160131 + 21222160132.

It is an arithmetic number, because the mean of its divisors is an integer number (21222160132).

Almost surely, 2^42444320263 is an apocalyptic number.

42444320263 is a deficient number, since it is larger than the sum of its proper divisors (1).

42444320263 is an equidigital number, since it uses as much as digits as its factorization.

42444320263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 42444320263 its reverse (36202344424), we get a palindrome (78646664687).

The spelling of 42444320263 in words is "forty-two billion, four hundred forty-four million, three hundred twenty thousand, two hundred sixty-three".