42444642626 has 16 divisors (see below), whose sum is σ = 65334510360. Its totient is φ = 20668293120.

The previous prime is 42444642623. The next prime is 42444642637. The reversal of 42444642626 is 62624644424.

42444642626 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 4 ways, for example, as 25073139025 + 17371503601 = 158345^2 + 131801^2 .

It is not an unprimeable number, because it can be changed into a prime (42444642623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408191 + ... + 501506.

Almost surely, 2^42444642626 is an apocalyptic number.

42444642626 is a deficient number, since it is larger than the sum of its proper divisors (22889867734).

42444642626 is a wasteful number, since it uses less digits than its factorization.

42444642626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910309.

The product of its digits is 1769472, while the sum is 44.

The spelling of 42444642626 in words is "forty-two billion, four hundred forty-four million, six hundred forty-two thousand, six hundred twenty-six".