243776066700 has 144 divisors (see below), whose sum is σ = 743046192000. Its totient is φ = 61535900160.

The previous prime is 243776066669. The next prime is 243776066713. The reversal of 243776066700 is 7660677342.

It is a self number, because there is not a number n which added to its sum of digits gives 243776066700.

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 47 ways as a sum of consecutive naturals, for example, 7330711 + ... + 7363889.

It is an arithmetic number, because the mean of its divisors is an integer number (5160043000).

Almost surely, 2^243776066700 is an apocalyptic number.

243776066700 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 243776066700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371523096000).

243776066700 is an abundant number, since it is smaller than the sum of its proper divisors (499270125300).

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

243776066700 is a wasteful number, since it uses less digits than its factorization.

243776066700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34504 (or 34497 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 48.

The spelling of 243776066700 in words is "two hundred forty-three billion, seven hundred seventy-six million, sixty-six thousand, seven hundred".