442351548641 has 4 divisors (see below), whose sum is σ = 443252468784. Its totient is φ = 441450628500.

The previous prime is 442351548623. The next prime is 442351548643. The reversal of 442351548641 is 146845153244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442351548641 - 2¹⁸ = 442351286497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442351548643) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 450459335 + ... + 450460316.

It is an arithmetic number, because the mean of its divisors is an integer number (110813117196).

Almost surely, 2^442351548641 is an apocalyptic number.

It is an amenable number.

442351548641 is a deficient number, since it is larger than the sum of its proper divisors (900920143).

442351548641 is an equidigital number, since it uses as much as digits as its factorization.

442351548641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900920142.

The product of its digits is 1843200, while the sum is 47.

The spelling of 442351548641 in words is "four hundred forty-two billion, three hundred fifty-one million, five hundred forty-eight thousand, six hundred forty-one".