243140140443201 has 16 divisors (see below), whose sum is σ = 324496141732224. Its totient is φ = 161938787117184.

The previous prime is 243140140443139. The next prime is 243140140443223. The reversal of 243140140443201 is 102344041041342.

It is a happy number.

243140140443201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243140140443201 - 2¹⁷ = 243140140312129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243140140443271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260448475 + ... + 261380351.

It is an arithmetic number, because the mean of its divisors is an integer number (20281008858264).

Almost surely, 2^{243140140443201} is an apocalyptic number.

It is an amenable number.

243140140443201 is a deficient number, since it is larger than the sum of its proper divisors (81356001289023).

243140140443201 is a wasteful number, since it uses less digits than its factorization.

243140140443201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014760.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 243140140443201 its reverse (102344041041342), we get a palindrome (345484181484543).

The spelling of 243140140443201 in words is "two hundred forty-three trillion, one hundred forty billion, one hundred forty million, four hundred forty-three thousand, two hundred one".