243378812160 has 576 divisors, whose sum is σ = 949251260160. Its totient is φ = 58557726720.

The previous prime is 243378812123. The next prime is 243378812179. The reversal of 243378812160 is 61218873342.

243378812160 is a `hidden beast` number, since 2 + 43 + 378 + 81 + 2 + 160 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 52079584 + ... + 52084256.

It is an arithmetic number, because the mean of its divisors is an integer number (1648005660).

Almost surely, 2^243378812160 is an apocalyptic number.

243378812160 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 243378812160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (474625630080).

243378812160 is an abundant number, since it is smaller than the sum of its proper divisors (705872448000).

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

243378812160 is a wasteful number, since it uses less digits than its factorization.

243378812160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4851 (or 4831 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 243378812160 in words is "two hundred forty-three billion, three hundred seventy-eight million, eight hundred twelve thousand, one hundred sixty".