20543254112120 has 64 divisors (see below), whose sum is σ = 47716247715840. Its totient is φ = 7951746844800.

The previous prime is 20543254112113. The next prime is 20543254112167. The reversal of 20543254112120 is 2121145234502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20378279 + ... + 21362601.

It is an arithmetic number, because the mean of its divisors is an integer number (745566370560).

Almost surely, 2^{20543254112120} is an apocalyptic number.

20543254112120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20543254112120 is an abundant number, since it is smaller than the sum of its proper divisors (27172993603720).

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

20543254112120 is a wasteful number, since it uses less digits than its factorization.

20543254112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001196 (or 1001192 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 20543254112120 its reverse (2121145234502), we get a palindrome (22664399346622).

The spelling of 20543254112120 in words is "twenty trillion, five hundred forty-three billion, two hundred fifty-four million, one hundred twelve thousand, one hundred twenty".