243345453253 has 16 divisors (see below), whose sum is σ = 278617522176. Its totient is φ = 208200677040.

The previous prime is 243345453209. The next prime is 243345453349. The reversal of 243345453253 is 352354543342.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243345453253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243345453203) 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, 31102500 + ... + 31110322.

It is an arithmetic number, because the mean of its divisors is an integer number (17413595136).

Almost surely, 2^243345453253 is an apocalyptic number.

It is an amenable number.

243345453253 is a deficient number, since it is larger than the sum of its proper divisors (35272068923).

243345453253 is an equidigital number, since it uses as much as digits as its factorization.

243345453253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15384.

The product of its digits is 2592000, while the sum is 43.

Adding to 243345453253 its reverse (352354543342), we get a palindrome (595699996595).

The spelling of 243345453253 in words is "two hundred forty-three billion, three hundred forty-five million, four hundred fifty-three thousand, two hundred fifty-three".