23365215042543 has 32 divisors (see below), whose sum is σ = 37797288787200. Its totient is φ = 14147489484000.

The previous prime is 23365215042529. The next prime is 23365215042563. The reversal of 23365215042543 is 34524051256332.

23365215042543 is a `hidden beast` number, since 2 + 3 + 3 + 6 + 5 + 215 + 0 + 425 + 4 + 3 = 666.

It is not a de Polignac number, because 23365215042543 - 2²⁸ = 23364946607087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23365215042503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36478933 + ... + 37113918.

It is an arithmetic number, because the mean of its divisors is an integer number (1181165274600).

Almost surely, 2^{23365215042543} is an apocalyptic number.

23365215042543 is a deficient number, since it is larger than the sum of its proper divisors (14432073744657).

23365215042543 is a wasteful number, since it uses less digits than its factorization.

23365215042543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73593940 (or 73593934 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 45.

Adding to 23365215042543 its reverse (34524051256332), we get a palindrome (57889266298875).

The spelling of 23365215042543 in words is "twenty-three trillion, three hundred sixty-five billion, two hundred fifteen million, forty-two thousand, five hundred forty-three".