243243541451 has 16 divisors (see below), whose sum is σ = 248224279680. Its totient is φ = 238292248320.

The previous prime is 243243541403. The next prime is 243243541481. The reversal of 243243541451 is 154145342342.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243243541451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243243541481) 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, 62256440 + ... + 62260346.

It is an arithmetic number, because the mean of its divisors is an integer number (15514017480).

Almost surely, 2^243243541451 is an apocalyptic number.

243243541451 is a deficient number, since it is larger than the sum of its proper divisors (4980738229).

243243541451 is a wasteful number, since it uses less digits than its factorization.

243243541451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7354.

The product of its digits is 230400, while the sum is 38.

Adding to 243243541451 its reverse (154145342342), we get a palindrome (397388883793).

The spelling of 243243541451 in words is "two hundred forty-three billion, two hundred forty-three million, five hundred forty-one thousand, four hundred fifty-one".