2044223665128 has 48 divisors (see below), whose sum is σ = 5537145634020. Its totient is φ = 681320929536.

The previous prime is 2044223665109. The next prime is 2044223665157. The reversal of 2044223665128 is 8215663224402.

It is a happy number.

2044223665128 is a `hidden beast` number, since 2 + 0 + 442 + 23 + 6 + 65 + 128 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1571207096484 + 473016568644 = 1253478^2 + 687762^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1242301 + ... + 2373132.

Almost surely, 2^{2044223665128} is an apocalyptic number.

It is an amenable number.

2044223665128 is an abundant number, since it is smaller than the sum of its proper divisors (3492921968892).

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

2044223665128 is a wasteful number, since it uses less digits than its factorization.

2044223665128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3623298 (or 3623291 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The spelling of 2044223665128 in words is "two trillion, forty-four billion, two hundred twenty-three million, six hundred sixty-five thousand, one hundred twenty-eight".