220543142065 has 4 divisors (see below), whose sum is σ = 264651770484. Its totient is φ = 176434513648.

The previous prime is 220543142033. The next prime is 220543142077. The reversal of 220543142065 is 560241345022.

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 121162471056 + 99380671009 = 348084^2 + 315247^2 .

It is a cyclic number.

It is not a de Polignac number, because 220543142065 - 2⁵ = 220543142033 is a prime.

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 220543142065.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22054314202 + ... + 22054314211.

It is an arithmetic number, because the mean of its divisors is an integer number (66162942621).

Almost surely, 2^220543142065 is an apocalyptic number.

It is an amenable number.

220543142065 is a deficient number, since it is larger than the sum of its proper divisors (44108628419).

220543142065 is an equidigital number, since it uses as much as digits as its factorization.

220543142065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44108628418.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 220543142065 its reverse (560241345022), we get a palindrome (780784487087).

The spelling of 220543142065 in words is "two hundred twenty billion, five hundred forty-three million, one hundred forty-two thousand, sixty-five".