243155205300 has 288 divisors, whose sum is σ = 837608611840. Its totient is φ = 53290483200.

The previous prime is 243155205299. The next prime is 243155205343. The reversal of 243155205300 is 3502551342.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7078767 + ... + 7113033.

Almost surely, 2^243155205300 is an apocalyptic number.

243155205300 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 243155205300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418804305920).

243155205300 is an abundant number, since it is smaller than the sum of its proper divisors (594453406540).

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

243155205300 is a wasteful number, since it uses less digits than its factorization.

243155205300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34431 (or 34424 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 243155205300 its reverse (3502551342), we get a palindrome (246657756642).

The spelling of 243155205300 in words is "two hundred forty-three billion, one hundred fifty-five million, two hundred five thousand, three hundred".