442491581064 has 32 divisors (see below), whose sum is σ = 1191323488320. Its totient is φ = 136151255616.

The previous prime is 442491581057. The next prime is 442491581089. The reversal of 442491581064 is 460185194244.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 709120812 + ... + 709121435.

It is an arithmetic number, because the mean of its divisors is an integer number (37228859010).

Almost surely, 2^442491581064 is an apocalyptic number.

It is an amenable number.

442491581064 is an abundant number, since it is smaller than the sum of its proper divisors (748831907256).

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

442491581064 is a wasteful number, since it uses less digits than its factorization.

442491581064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418242269 (or 1418242265 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 48.

The spelling of 442491581064 in words is "four hundred forty-two billion, four hundred ninety-one million, five hundred eighty-one thousand, sixty-four".