442431626641 has 8 divisors (see below), whose sum is σ = 448828300800. Its totient is φ = 436077455760.

The previous prime is 442431626629. The next prime is 442431626683. The reversal of 442431626641 is 146626134244.

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

It is a cyclic number.

It is not a de Polignac number, because 442431626641 - 2¹³ = 442431618449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442431626621) 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, 10604851 + ... + 10646488.

It is an arithmetic number, because the mean of its divisors is an integer number (56103537600).

Almost surely, 2^442431626641 is an apocalyptic number.

It is an amenable number.

442431626641 is a deficient number, since it is larger than the sum of its proper divisors (6396674159).

442431626641 is a wasteful number, since it uses less digits than its factorization.

442431626641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21251639.

The product of its digits is 663552, while the sum is 43.

The spelling of 442431626641 in words is "four hundred forty-two billion, four hundred thirty-one million, six hundred twenty-six thousand, six hundred forty-one".