243722719356872 has 32 divisors (see below), whose sum is σ = 527143932400320. Its totient is φ = 103476401540160.

The previous prime is 243722719356859. The next prime is 243722719356887. The reversal of 243722719356872 is 278653917227342.

It is a happy number.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20337337079 + ... + 20337349062.

It is an arithmetic number, because the mean of its divisors is an integer number (16473247887510).

Almost surely, 2^{243722719356872} is an apocalyptic number.

It is an amenable number.

243722719356872 is an abundant number, since it is smaller than the sum of its proper divisors (283421213043448).

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

243722719356872 is a wasteful number, since it uses less digits than its factorization.

243722719356872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40674686261 (or 40674686257 counting only the distinct ones).

The product of its digits is 426746880, while the sum is 68.

The spelling of 243722719356872 in words is "two hundred forty-three trillion, seven hundred twenty-two billion, seven hundred nineteen million, three hundred fifty-six thousand, eight hundred seventy-two".