42804208108889 has 4 divisors (see below), whose sum is σ = 42804831845556. Its totient is φ = 42803584372224.

The previous prime is 42804208108867. The next prime is 42804208108891. The reversal of 42804208108889 is 98880180240824.

42804208108889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28224090643225 + 14580117465664 = 5312635^2 + 3818392^2 .

It is a cyclic number.

It is not a de Polignac number, because 42804208108889 - 2⁸ = 42804208108633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42804208108819) 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 in 3 ways as a sum of consecutive naturals, for example, 311765384 + ... + 311902649.

It is an arithmetic number, because the mean of its divisors is an integer number (10701207961389).

Almost surely, 2^{42804208108889} is an apocalyptic number.

It is an amenable number.

42804208108889 is a deficient number, since it is larger than the sum of its proper divisors (623736667).

42804208108889 is an equidigital number, since it uses as much as digits as its factorization.

42804208108889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623736666.

The product of its (nonzero) digits is 18874368, while the sum is 62.

The spelling of 42804208108889 in words is "forty-two trillion, eight hundred four billion, two hundred eight million, one hundred eight thousand, eight hundred eighty-nine".