543065634161 has 4 divisors (see below), whose sum is σ = 544621696500. Its totient is φ = 541509571824.

The previous prime is 543065634157. The next prime is 543065634169. The reversal of 543065634161 is 161436560345.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 499610062561 + 43455571600 = 706831^2 + 208460^2 .

It is a cyclic number.

It is not a de Polignac number, because 543065634161 - 2² = 543065634157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (543065634169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 778030646 + ... + 778031343.

It is an arithmetic number, because the mean of its divisors is an integer number (136155424125).

Almost surely, 2^543065634161 is an apocalyptic number.

It is an amenable number.

543065634161 is a deficient number, since it is larger than the sum of its proper divisors (1556062339).

543065634161 is a wasteful number, since it uses less digits than its factorization.

543065634161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556062338.

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 543065634161 in words is "five hundred forty-three billion, sixty-five million, six hundred thirty-four thousand, one hundred sixty-one".