42288680809 has 2 divisors, whose sum is σ = 42288680810. Its totient is φ = 42288680808.

The previous prime is 42288680807. The next prime is 42288680869. The reversal of 42288680809 is 90808688224.

It is a happy number.

42288680809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28168587225 + 14120093584 = 167835^2 + 118828^2 .

It is a cyclic number.

It is not a de Polignac number, because 42288680809 - 2¹ = 42288680807 is a prime.

Together with 42288680807, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42288680809.

It is not a weakly prime, because it can be changed into another prime (42288680807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21144340404 + 21144340405.

It is an arithmetic number, because the mean of its divisors is an integer number (21144340405).

Almost surely, 2^42288680809 is an apocalyptic number.

It is an amenable number.

42288680809 is a deficient number, since it is larger than the sum of its proper divisors (1).

42288680809 is an equidigital number, since it uses as much as digits as its factorization.

42288680809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3538944, while the sum is 55.

The spelling of 42288680809 in words is "forty-two billion, two hundred eighty-eight million, six hundred eighty thousand, eight hundred nine".