440406626664 has 64 divisors (see below), whose sum is σ = 1125933696000. Its totient is φ = 143507729600.

The previous prime is 440406626651. The next prime is 440406626729. The reversal of 440406626664 is 466626604044.

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, 615312 + ... + 1122239.

It is an arithmetic number, because the mean of its divisors is an integer number (17592714000).

Almost surely, 2^440406626664 is an apocalyptic number.

It is an amenable number.

440406626664 is an abundant number, since it is smaller than the sum of its proper divisors (685527069336).

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

440406626664 is a wasteful number, since it uses less digits than its factorization.

440406626664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737798 (or 1737794 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 48.

The spelling of 440406626664 in words is "four hundred forty billion, four hundred six million, six hundred twenty-six thousand, six hundred sixty-four".