42444543626 has 8 divisors (see below), whose sum is σ = 63670899204. Its totient is φ = 21220910560.

The previous prime is 42444543623. The next prime is 42444543649. The reversal of 42444543626 is 62634544424.

It can be written as a sum of positive squares in 2 ways, for example, as 41635994401 + 808549225 = 204049^2 + 28435^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (42444543623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641195 + ... + 704286.

Almost surely, 2^42444543626 is an apocalyptic number.

42444543626 is a deficient number, since it is larger than the sum of its proper divisors (21226355578).

42444543626 is a wasteful number, since it uses less digits than its factorization.

42444543626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361256.

The product of its digits is 2211840, while the sum is 44.

The spelling of 42444543626 in words is "forty-two billion, four hundred forty-four million, five hundred forty-three thousand, six hundred twenty-six".