42447305807 has 2 divisors, whose sum is σ = 42447305808. Its totient is φ = 42447305806.

The previous prime is 42447305783. The next prime is 42447305903. The reversal of 42447305807 is 70850374424.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42447305807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42447305107) 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, 21223652903 + 21223652904.

It is an arithmetic number, because the mean of its divisors is an integer number (21223652904).

Almost surely, 2^42447305807 is an apocalyptic number.

42447305807 is a deficient number, since it is larger than the sum of its proper divisors (1).

42447305807 is an equidigital number, since it uses as much as digits as its factorization.

42447305807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 752640, while the sum is 44.

The spelling of 42447305807 in words is "forty-two billion, four hundred forty-seven million, three hundred five thousand, eight hundred seven".