42443255016605 has 4 divisors (see below), whose sum is σ = 50931906019932. Its totient is φ = 33954604013280.

The previous prime is 42443255016571. The next prime is 42443255016611. The reversal of 42443255016605 is 50661055234424.

42443255016605 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 11062049833156 + 31381205183449 = 3325966^2 + 5601893^2 .

It is not a de Polignac number, because 42443255016605 - 2³² = 42438960049309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42443255016605.

It is a congruent number.

It is an unprimeable number.

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, 4244325501656 + ... + 4244325501665.

It is an arithmetic number, because the mean of its divisors is an integer number (12732976504983).

Almost surely, 2^{42443255016605} is an apocalyptic number.

It is an amenable number.

42443255016605 is a deficient number, since it is larger than the sum of its proper divisors (8488651003327).

42443255016605 is an equidigital number, since it uses as much as digits as its factorization.

42443255016605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8488651003326.

The product of its (nonzero) digits is 3456000, while the sum is 47.

The spelling of 42443255016605 in words is "forty-two trillion, four hundred forty-three billion, two hundred fifty-five million, sixteen thousand, six hundred five".