1004440643664 has 80 divisors (see below), whose sum is σ = 2605681475712. Its totient is φ = 333413074944.

The previous prime is 1004440643663. The next prime is 1004440643671. The reversal of 1004440643664 is 4663460444001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004440643663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10988292 + ... + 11079324.

Almost surely, 2^{1004440643664} is an apocalyptic number.

It is an amenable number.

1004440643664 is an abundant number, since it is smaller than the sum of its proper divisors (1601240832048).

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

1004440643664 is a wasteful number, since it uses less digits than its factorization.

1004440643664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92004 (or 91998 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 1004440643664 in words is "one trillion, four billion, four hundred forty million, six hundred forty-three thousand, six hundred sixty-four".