20444211142140 has 96 divisors (see below), whose sum is σ = 60614613589824. Its totient is φ = 5130796400640.

The previous prime is 20444211142133. The next prime is 20444211142183. The reversal of 20444211142140 is 4124111244402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 20444211142098 and 20444211142107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17147820 + ... + 18301260.

It is an arithmetic number, because the mean of its divisors is an integer number (631402224894).

Almost surely, 2^{20444211142140} is an apocalyptic number.

20444211142140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20444211142140 is an abundant number, since it is smaller than the sum of its proper divisors (40170402447684).

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

20444211142140 is a wasteful number, since it uses less digits than its factorization.

20444211142140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170847 (or 1170845 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

Adding to 20444211142140 its reverse (4124111244402), we get a palindrome (24568322386542).

The spelling of 20444211142140 in words is "twenty trillion, four hundred forty-four billion, two hundred eleven million, one hundred forty-two thousand, one hundred forty".