20344145211140 has 48 divisors (see below), whose sum is σ = 44248579603200. Its totient is φ = 7847684218752.

The previous prime is 20344145211133. The next prime is 20344145211251. The reversal of 20344145211140 is 4111254144302.

It is a junction number, because it is equal to n+sod(n) for n = 20344145211097 and 20344145211106.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 20416904 + ... + 21390143.

It is an arithmetic number, because the mean of its divisors is an integer number (921845408400).

Almost surely, 2^{20344145211140} is an apocalyptic number.

20344145211140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20344145211140 is an abundant number, since it is smaller than the sum of its proper divisors (23904434392060).

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

20344145211140 is a wasteful number, since it uses less digits than its factorization.

20344145211140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41807924 (or 41807922 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

Adding to 20344145211140 its reverse (4111254144302), we get a palindrome (24455399355442).

The spelling of 20344145211140 in words is "twenty trillion, three hundred forty-four billion, one hundred forty-five million, two hundred eleven thousand, one hundred forty".