42220343455445 has 16 divisors (see below), whose sum is σ = 50674064184432. Its totient is φ = 33769840711680.

The previous prime is 42220343455417. The next prime is 42220343455471. The reversal of 42220343455445 is 54455434302224.

42220343455445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 4519097917489 + 37701245537956 = 2125817^2 + 6140134^2 .

It is not a de Polignac number, because 42220343455445 - 2¹⁴ = 42220343439061 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 42220343455445.

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 15 ways as a sum of consecutive naturals, for example, 809087255 + ... + 809139435.

It is an arithmetic number, because the mean of its divisors is an integer number (3167129011527).

Almost surely, 2^{42220343455445} is an apocalyptic number.

It is an amenable number.

42220343455445 is a deficient number, since it is larger than the sum of its proper divisors (8453720728987).

42220343455445 is a wasteful number, since it uses less digits than its factorization.

42220343455445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79912.

The product of its (nonzero) digits is 9216000, while the sum is 47.

Adding to 42220343455445 its reverse (54455434302224), we get a palindrome (96675777757669).

The spelling of 42220343455445 in words is "forty-two trillion, two hundred twenty billion, three hundred forty-three million, four hundred fifty-five thousand, four hundred forty-five".