44020640868 has 12 divisors (see below), whose sum is σ = 102714828720. Its totient is φ = 14673546952.

The previous prime is 44020640831. The next prime is 44020640879. The reversal of 44020640868 is 86804602044.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1834193358 + ... + 1834193381.

It is an arithmetic number, because the mean of its divisors is an integer number (8559569060).

Almost surely, 2^44020640868 is an apocalyptic number.

It is an amenable number.

44020640868 is an abundant number, since it is smaller than the sum of its proper divisors (58694187852).

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

44020640868 is a wasteful number, since it uses less digits than its factorization.

44020640868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668386746 (or 3668386744 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The spelling of 44020640868 in words is "forty-four billion, twenty million, six hundred forty thousand, eight hundred sixty-eight".