204111365145543 has 12 divisors (see below), whose sum is σ = 307646115582000. Its totient is φ = 130157971976736.

The previous prime is 204111365145481. The next prime is 204111365145551. The reversal of 204111365145543 is 345541563111402.

204111365145543 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 1 + 1 + 3 + 65 + 1 + 45 + 543 = 666.

It is not a de Polignac number, because 204111365145543 - 2⁹ = 204111365145031 is a prime.

It is a super-2 number, since 2×204111365145543² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204111365145563) 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 11 ways as a sum of consecutive naturals, for example, 493022620918 + ... + 493022621331.

It is an arithmetic number, because the mean of its divisors is an integer number (25637176298500).

Almost surely, 2^{204111365145543} is an apocalyptic number.

204111365145543 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

204111365145543 is a deficient number, since it is larger than the sum of its proper divisors (103534750436457).

204111365145543 is a wasteful number, since it uses less digits than its factorization.

204111365145543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986045242278 (or 986045242275 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 204111365145543 in words is "two hundred four trillion, one hundred eleven billion, three hundred sixty-five million, one hundred forty-five thousand, five hundred forty-three".