243619944960 has 640 divisors, whose sum is σ = 941854003200. Its totient is φ = 52514390016.

The previous prime is 243619944947. The next prime is 243619944989. The reversal of 243619944960 is 69449916342.

It is a tau number, because it is divible by the number of its divisors (640).

It is a self number, because there is not a number n which added to its sum of digits gives 243619944960.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 90261691 + ... + 90264389.

It is an arithmetic number, because the mean of its divisors is an integer number (1471646880).

Almost surely, 2^243619944960 is an apocalyptic number.

243619944960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243619944960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (470927001600).

243619944960 is an abundant number, since it is smaller than the sum of its proper divisors (698234058240).

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

243619944960 is a wasteful number, since it uses less digits than its factorization.

243619944960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2828 (or 2812 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 57.

The spelling of 243619944960 in words is "two hundred forty-three billion, six hundred nineteen million, nine hundred forty-four thousand, nine hundred sixty".