243625345243 has 4 divisors (see below), whose sum is σ = 278428966000. Its totient is φ = 208821724488.

The previous prime is 243625345213. The next prime is 243625345289. The reversal of 243625345243 is 342543526342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342543526342 = 2 ⋅171271763171.

It is a cyclic number.

It is not a de Polignac number, because 243625345243 - 2⁵ = 243625345211 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 243625345243.

It is not an unprimeable number, because it can be changed into a prime (243625345213) 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, 17401810368 + ... + 17401810381.

It is an arithmetic number, because the mean of its divisors is an integer number (69607241500).

Almost surely, 2^243625345243 is an apocalyptic number.

243625345243 is a deficient number, since it is larger than the sum of its proper divisors (34803620757).

243625345243 is an equidigital number, since it uses as much as digits as its factorization.

243625345243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34803620756.

The product of its digits is 2073600, while the sum is 43.

The spelling of 243625345243 in words is "two hundred forty-three billion, six hundred twenty-five million, three hundred forty-five thousand, two hundred forty-three".