243983978700000 has 1152 divisors, whose sum is σ = 1007390194900992. Its totient is φ = 50223648000000.

The previous prime is 243983978699963. The next prime is 243983978700109. The reversal of 243983978700000 is 7879389342.

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

It is a junction number, because it is equal to n+sod(n) for n = 243983978699898 and 243983978699907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2471650645 + ... + 2471749355.

It is an arithmetic number, because the mean of its divisors is an integer number (874470655296).

Almost surely, 2^{243983978700000} is an apocalyptic number.

243983978700000 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 243983978700000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (503695097450496).

243983978700000 is an abundant number, since it is smaller than the sum of its proper divisors (763406216200992).

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

243983978700000 is a wasteful number, since it uses less digits than its factorization.

243983978700000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98874 (or 98846 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 60.

The spelling of 243983978700000 in words is "two hundred forty-three trillion, nine hundred eighty-three billion, nine hundred seventy-eight million, seven hundred thousand".