20120044331140 has 24 divisors (see below), whose sum is σ = 45502254103320. Its totient is φ = 7428939445248.

The previous prime is 20120044331047. The next prime is 20120044331159. The reversal of 20120044331140 is 4113344002102.

It can be written as a sum of positive squares in 4 ways, for example, as 357965283204 + 19762079047936 = 598302^2 + 4445456^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38692392685 + ... + 38692393204.

It is an arithmetic number, because the mean of its divisors is an integer number (1895927254305).

Almost surely, 2^{20120044331140} is an apocalyptic number.

20120044331140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120044331140 is an abundant number, since it is smaller than the sum of its proper divisors (25382209772180).

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

20120044331140 is a wasteful number, since it uses less digits than its factorization.

20120044331140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77384785911 (or 77384785909 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 20120044331140 its reverse (4113344002102), we get a palindrome (24233388333242).

The spelling of 20120044331140 in words is "twenty trillion, one hundred twenty billion, forty-four million, three hundred thirty-one thousand, one hundred forty".