20543420540132 has 12 divisors (see below), whose sum is σ = 41086841080320. Its totient is φ = 8804323088616.

The previous prime is 20543420540119. The next prime is 20543420540219. The reversal of 20543420540132 is 23104502434502.

It is a happy number.

20543420540132 is an admirable number.

It is a super-4 number, since 4×20543420540132⁴ (a number of 54 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20543420540092 and 20543420540101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366846795332 + ... + 366846795387.

It is an arithmetic number, because the mean of its divisors is an integer number (3423903423360).

Almost surely, 2^{20543420540132} is an apocalyptic number.

It is an amenable number.

20543420540132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20543420540132 is a wasteful number, since it uses less digits than its factorization.

20543420540132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733693590730 (or 733693590728 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 20543420540132 its reverse (23104502434502), we get a palindrome (43647922974634).

The spelling of 20543420540132 in words is "twenty trillion, five hundred forty-three billion, four hundred twenty million, five hundred forty thousand, one hundred thirty-two".