44012320020 has 72 divisors (see below), whose sum is σ = 136760256360. Its totient is φ = 11450357760.

The previous prime is 44012320007. The next prime is 44012320021. The reversal of 44012320020 is 2002321044.

44012320020 is a `hidden beast` number, since 440 + 1 + 2 + 3 + 200 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1754939664 + 42257380356 = 41892^2 + 205566^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 44012319975 and 44012320002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44012320021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2974485 + ... + 2989244.

It is an arithmetic number, because the mean of its divisors is an integer number (1899448005).

Almost surely, 2^44012320020 is an apocalyptic number.

It is an amenable number.

44012320020 is an abundant number, since it is smaller than the sum of its proper divisors (92747936340).

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

44012320020 is a wasteful number, since it uses less digits than its factorization.

44012320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5963785 (or 5963780 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 44012320020 its reverse (2002321044), we get a palindrome (46014641064).

The spelling of 44012320020 in words is "forty-four billion, twelve million, three hundred twenty thousand, twenty".