243155540200 has 96 divisors (see below), whose sum is σ = 590510419200. Its totient is φ = 92996386560.

The previous prime is 243155540197. The next prime is 243155540213. The reversal of 243155540200 is 2045551342.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 393889 + ... + 800911.

It is an arithmetic number, because the mean of its divisors is an integer number (6151150200).

Almost surely, 2^243155540200 is an apocalyptic number.

243155540200 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 243155540200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295255209600).

243155540200 is an abundant number, since it is smaller than the sum of its proper divisors (347354879000).

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

243155540200 is a wasteful number, since it uses less digits than its factorization.

243155540200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407171 (or 407162 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 243155540200 in words is "two hundred forty-three billion, one hundred fifty-five million, five hundred forty thousand, two hundred".