42869448289 has 2 divisors, whose sum is σ = 42869448290. Its totient is φ = 42869448288.

The previous prime is 42869448277. The next prime is 42869448359. The reversal of 42869448289 is 98284496824.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40901017600 + 1968430689 = 202240^2 + 44367^2 .

It is a cyclic number.

It is not a de Polignac number, because 42869448289 - 2⁷ = 42869448161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42869448289.

It is not a weakly prime, because it can be changed into another prime (42869448229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21434724144 + 21434724145.

It is an arithmetic number, because the mean of its divisors is an integer number (21434724145).

Almost surely, 2^42869448289 is an apocalyptic number.

It is an amenable number.

42869448289 is a deficient number, since it is larger than the sum of its proper divisors (1).

42869448289 is an equidigital number, since it uses as much as digits as its factorization.

42869448289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63700992, while the sum is 64.

The spelling of 42869448289 in words is "forty-two billion, eight hundred sixty-nine million, four hundred forty-eight thousand, two hundred eighty-nine".