243044304451 has 6 divisors (see below), whose sum is σ = 263178152340. Its totient is φ = 224348588568.

The previous prime is 243044304421. The next prime is 243044304463. The reversal of 243044304451 is 154403440342.

It is not a de Polignac number, because 243044304451 - 2³¹ = 240896820803 is a prime.

It is a super-2 number, since 2×243044304451² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243044304421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 719065821 + ... + 719066158.

It is an arithmetic number, because the mean of its divisors is an integer number (43863025390).

Almost surely, 2^243044304451 is an apocalyptic number.

243044304451 is a deficient number, since it is larger than the sum of its proper divisors (20133847889).

243044304451 is a wasteful number, since it uses less digits than its factorization.

243044304451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438132005 (or 1438131992 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 34.

Adding to 243044304451 its reverse (154403440342), we get a palindrome (397447744793).

The spelling of 243044304451 in words is "two hundred forty-three billion, forty-four million, three hundred four thousand, four hundred fifty-one".