44020400666 has 16 divisors (see below), whose sum is σ = 72070756128. Its totient is φ = 19998891600.

The previous prime is 44020400663. The next prime is 44020400717. The reversal of 44020400666 is 66600402044.

It is not an unprimeable number, because it can be changed into a prime (44020400663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475625 + ... + 560588.

It is an arithmetic number, because the mean of its divisors is an integer number (4504422258).

Almost surely, 2^44020400666 is an apocalyptic number.

44020400666 is a deficient number, since it is larger than the sum of its proper divisors (28050355462).

44020400666 is a wasteful number, since it uses less digits than its factorization.

44020400666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038157.

The product of its (nonzero) digits is 27648, while the sum is 32.

The spelling of 44020400666 in words is "forty-four billion, twenty million, four hundred thousand, six hundred sixty-six".