23543219843 has 32 divisors (see below), whose sum is σ = 29386445760. Its totient is φ = 18559618560.

The previous prime is 23543219809. The next prime is 23543219873. The reversal of 23543219843 is 34891234532.

It is a Cunningham number, because it is equal to 153438²-1.

It is a cyclic number.

It is not a de Polignac number, because 23543219843 - 2¹² = 23543215747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23543219794 and 23543219803.

It is not an unprimeable number, because it can be changed into a prime (23543219873) 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, 76721 + ... + 230157.

It is an arithmetic number, because the mean of its divisors is an integer number (918326430).

Almost surely, 2^23543219843 is an apocalyptic number.

23543219843 is a deficient number, since it is larger than the sum of its proper divisors (5843225917).

23543219843 is a wasteful number, since it uses less digits than its factorization.

23543219843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153527.

The product of its digits is 622080, while the sum is 44.

The spelling of 23543219843 in words is "twenty-three billion, five hundred forty-three million, two hundred nineteen thousand, eight hundred forty-three".