2044440993920 has 64 divisors (see below), whose sum is σ = 5263452676440. Its totient is φ = 754870517760.

The previous prime is 2044440993919. The next prime is 2044440993953. The reversal of 2044440993920 is 293990444402.

It can be written as a sum of positive squares in 4 ways, for example, as 1392003548224 + 652437445696 = 1179832^2 + 807736^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122854721 + ... + 122871360.

Almost surely, 2^{2044440993920} is an apocalyptic number.

2044440993920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2044440993920 is an abundant number, since it is smaller than the sum of its proper divisors (3219011682520).

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

2044440993920 is a wasteful number, since it uses less digits than its factorization.

2044440993920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245726113 (or 245726101 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 50.

The spelling of 2044440993920 in words is "two trillion, forty-four billion, four hundred forty million, nine hundred ninety-three thousand, nine hundred twenty".