38444406666 has 32 divisors (see below), whose sum is σ = 82400243328. Its totient is φ = 11926347840.

The previous prime is 38444406631. The next prime is 38444406677. The reversal of 38444406666 is 66660444483.

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, 3759525 + ... + 3769736.

It is an arithmetic number, because the mean of its divisors is an integer number (2575007604).

Almost surely, 2^38444406666 is an apocalyptic number.

38444406666 is an abundant number, since it is smaller than the sum of its proper divisors (43955836662).

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

38444406666 is a wasteful number, since it uses less digits than its factorization.

38444406666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7529326.

The product of its (nonzero) digits is 7962624, while the sum is 51.

The spelling of 38444406666 in words is "thirty-eight billion, four hundred forty-four million, four hundred six thousand, six hundred sixty-six".