42440847619 has 2 divisors, whose sum is σ = 42440847620. Its totient is φ = 42440847618.

The previous prime is 42440847611. The next prime is 42440847623. The reversal of 42440847619 is 91674804424.

42440847619 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 42440847619 - 2³ = 42440847611 is a prime.

It is a super-2 number, since 2×42440847619² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42440847611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21220423809 + 21220423810.

It is an arithmetic number, because the mean of its divisors is an integer number (21220423810).

Almost surely, 2^42440847619 is an apocalyptic number.

42440847619 is a deficient number, since it is larger than the sum of its proper divisors (1).

42440847619 is an equidigital number, since it uses as much as digits as its factorization.

42440847619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 42440847619 in words is "forty-two billion, four hundred forty million, eight hundred forty-seven thousand, six hundred nineteen".