243224417420172 has 72 divisors (see below), whose sum is σ = 626429204528400. Its totient is φ = 79543619326080.

The previous prime is 243224417419933. The next prime is 243224417420263. The reversal of 243224417420172 is 271024714422342.

It is a happy number.

243224417420172 is a `hidden beast` number, since 2 + 4 + 3 + 2 + 2 + 44 + 17 + 420 + 172 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104342454 + ... + 106648002.

It is an arithmetic number, because the mean of its divisors is an integer number (8700405618450).

Almost surely, 2^{243224417420172} is an apocalyptic number.

It is an amenable number.

243224417420172 is an abundant number, since it is smaller than the sum of its proper divisors (383204787108228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243224417420172 is a wasteful number, since it uses less digits than its factorization.

243224417420172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360903 (or 2360898 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 45.

The spelling of 243224417420172 in words is "two hundred forty-three trillion, two hundred twenty-four billion, four hundred seventeen million, four hundred twenty thousand, one hundred seventy-two".