20231506025543 has 16 divisors (see below), whose sum is σ = 20422695465312. Its totient is φ = 20041426944000.

The previous prime is 20231506025509. The next prime is 20231506025569. The reversal of 20231506025543 is 34552060513202.

It is a cyclic number.

It is not a de Polignac number, because 20231506025543 - 2¹⁰ = 20231506024519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20231506025497 and 20231506025506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20231506025243) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 40044263 + ... + 40546343.

It is an arithmetic number, because the mean of its divisors is an integer number (1276418466582).

Almost surely, 2^{20231506025543} is an apocalyptic number.

20231506025543 is a deficient number, since it is larger than the sum of its proper divisors (191189439769).

20231506025543 is a wasteful number, since it uses less digits than its factorization.

20231506025543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503186.

The product of its (nonzero) digits is 216000, while the sum is 38.

Adding to 20231506025543 its reverse (34552060513202), we get a palindrome (54783566538745).

The spelling of 20231506025543 in words is "twenty trillion, two hundred thirty-one billion, five hundred six million, twenty-five thousand, five hundred forty-three".