243784956480 has 448 divisors, whose sum is σ = 862117095168. Its totient is φ = 57987072000.

The previous prime is 243784956433. The next prime is 243784956497. The reversal of 243784956480 is 84659487342.

It is a super-2 number, since 2×243784956480² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44313730 + ... + 44319230.

It is an arithmetic number, because the mean of its divisors is an integer number (1924368516).

Almost surely, 2^243784956480 is an apocalyptic number.

243784956480 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 243784956480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (431058547584).

243784956480 is an abundant number, since it is smaller than the sum of its proper divisors (618332138688).

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

243784956480 is a wasteful number, since it uses less digits than its factorization.

243784956480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5654 (or 5644 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 60.

The spelling of 243784956480 in words is "two hundred forty-three billion, seven hundred eighty-four million, nine hundred fifty-six thousand, four hundred eighty".