42442066644 has 24 divisors (see below), whose sum is σ = 102226053888. Its totient is φ = 13690989120.

The previous prime is 42442066621. The next prime is 42442066697. The reversal of 42442066644 is 44666024424.

It is a junction number, because it is equal to n+sod(n) for n = 42442066596 and 42442066605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57045417 + ... + 57046160.

It is an arithmetic number, because the mean of its divisors is an integer number (4259418912).

Almost surely, 2^42442066644 is an apocalyptic number.

It is an amenable number.

42442066644 is an abundant number, since it is smaller than the sum of its proper divisors (59783987244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42442066644 is a wasteful number, since it uses less digits than its factorization.

42442066644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114091615 (or 114091613 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 42.

The spelling of 42442066644 in words is "forty-two billion, four hundred forty-two million, sixty-six thousand, six hundred forty-four".