205554543045 has 8 divisors (see below), whose sum is σ = 328887268896. Its totient is φ = 109629089616.

The previous prime is 205554542969. The next prime is 205554543101. The reversal of 205554543045 is 540345455502.

205554543045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205554543045 - 2¹⁰ = 205554542021 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 205554542988 and 205554543006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6851818087 + ... + 6851818116.

It is an arithmetic number, because the mean of its divisors is an integer number (41110908612).

Almost surely, 2^205554543045 is an apocalyptic number.

It is an amenable number.

205554543045 is a deficient number, since it is larger than the sum of its proper divisors (123332725851).

205554543045 is a wasteful number, since it uses less digits than its factorization.

205554543045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13703636211.

The product of its (nonzero) digits is 1200000, while the sum is 42.

Adding to 205554543045 its reverse (540345455502), we get a palindrome (745899998547).

The spelling of 205554543045 in words is "two hundred five billion, five hundred fifty-four million, five hundred forty-three thousand, forty-five".