243344021451 has 16 divisors (see below), whose sum is σ = 347893171200. Its totient is φ = 150753702528.

The previous prime is 243344021429. The next prime is 243344021483. The reversal of 243344021451 is 154120443342.

It is not a de Polignac number, because 243344021451 - 2⁵ = 243344021419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243344021491) 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, 30195031 + ... + 30203088.

It is an arithmetic number, because the mean of its divisors is an integer number (21743323200).

Almost surely, 2^243344021451 is an apocalyptic number.

243344021451 is a deficient number, since it is larger than the sum of its proper divisors (104549149749).

243344021451 is a wasteful number, since it uses less digits than its factorization.

243344021451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60398218.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 243344021451 its reverse (154120443342), we get a palindrome (397464464793).

The spelling of 243344021451 in words is "two hundred forty-three billion, three hundred forty-four million, twenty-one thousand, four hundred fifty-one".