20043232140340 has 24 divisors (see below), whose sum is σ = 42094824643872. Its totient is φ = 8016523875360.

The previous prime is 20043232140319. The next prime is 20043232140343. The reversal of 20043232140340 is 4304123234002.

It is a junction number, because it is equal to n+sod(n) for n = 20043232140299 and 20043232140308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043232140343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47847546 + ... + 48264625.

It is an arithmetic number, because the mean of its divisors is an integer number (1753951026828).

Almost surely, 2^{20043232140340} is an apocalyptic number.

20043232140340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20043232140340 is an abundant number, since it is smaller than the sum of its proper divisors (22051592503532).

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

20043232140340 is a wasteful number, since it uses less digits than its factorization.

20043232140340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96122607 (or 96122605 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 20043232140340 its reverse (4304123234002), we get a palindrome (24347355374342).

The spelling of 20043232140340 in words is "twenty trillion, forty-three billion, two hundred thirty-two million, one hundred forty thousand, three hundred forty".