243224423562561 has 64 divisors (see below), whose sum is σ = 380494207973376. Its totient is φ = 135300284582400.

The previous prime is 243224423562529. The next prime is 243224423562577. The reversal of 243224423562561 is 165265324422342.

It is not a de Polignac number, because 243224423562561 - 2⁵ = 243224423562529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243224423562761) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3325745551 + ... + 3325818683.

It is an arithmetic number, because the mean of its divisors is an integer number (5945221999584).

Almost surely, 2^{243224423562561} is an apocalyptic number.

243224423562561 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

243224423562561 is a deficient number, since it is larger than the sum of its proper divisors (137269784410815).

243224423562561 is a wasteful number, since it uses less digits than its factorization.

243224423562561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81542.

The product of its digits is 16588800, while the sum is 51.

The spelling of 243224423562561 in words is "two hundred forty-three trillion, two hundred twenty-four billion, four hundred twenty-three million, five hundred sixty-two thousand, five hundred sixty-one".