4440155664 has 80 divisors (see below), whose sum is σ = 13561096320. Its totient is φ = 1224867840.

The previous prime is 4440155651. The next prime is 4440155683. The reversal of 4440155664 is 4665510444.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218097 + ... + 237584.

It is an arithmetic number, because the mean of its divisors is an integer number (169513704).

Almost surely, 2^4440155664 is an apocalyptic number.

It is an amenable number.

4440155664 is an abundant number, since it is smaller than the sum of its proper divisors (9120940656).

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

4440155664 is a wasteful number, since it uses less digits than its factorization.

4440155664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455728 (or 455722 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 39.

The square root of 4440155664 is about 66634.4930497712. The cubic root of 4440155664 is about 1643.6123605801.

The spelling of 4440155664 in words is "four billion, four hundred forty million, one hundred fifty-five thousand, six hundred sixty-four".