243250605664 has 72 divisors (see below), whose sum is σ = 554098912920. Its totient is φ = 104749032960.

The previous prime is 243250605629. The next prime is 243250605673. The reversal of 243250605664 is 466506052342.

243250605664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 243250605664.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 1579669 + ... + 1726804.

It is an arithmetic number, because the mean of its divisors is an integer number (7695818235).

Almost surely, 2^243250605664 is an apocalyptic number.

It is an amenable number.

243250605664 is an abundant number, since it is smaller than the sum of its proper divisors (310848307256).

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

243250605664 is a wasteful number, since it uses less digits than its factorization.

243250605664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3306524 (or 3306505 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 243250605664 in words is "two hundred forty-three billion, two hundred fifty million, six hundred five thousand, six hundred sixty-four".