23820405288543 has 8 divisors (see below), whose sum is σ = 35289489316400. Its totient is φ = 15880270192344.

The previous prime is 23820405288539. The next prime is 23820405288599. The reversal of 23820405288543 is 34588250402832.

23820405288543 is a `hidden beast` number, since 2 + 3 + 8 + 2 + 0 + 40 + 52 + 8 + 8 + 543 = 666.

It is not a de Polignac number, because 23820405288543 - 2² = 23820405288539 is a prime.

It is a super-2 number, since 2×23820405288543² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23820405288543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23820405288643) 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, 441118616428 + ... + 441118616481.

It is an arithmetic number, because the mean of its divisors is an integer number (4411186164550).

Almost surely, 2^{23820405288543} is an apocalyptic number.

23820405288543 is a deficient number, since it is larger than the sum of its proper divisors (11469084027857).

23820405288543 is an equidigital number, since it uses as much as digits as its factorization.

23820405288543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882237232918 (or 882237232912 counting only the distinct ones).

The product of its (nonzero) digits is 14745600, while the sum is 54.

The spelling of 23820405288543 in words is "twenty-three trillion, eight hundred twenty billion, four hundred five million, two hundred eighty-eight thousand, five hundred forty-three".