243223553743700 has 108 divisors (see below), whose sum is σ = 537598507777212. Its totient is φ = 95514666892800.

The previous prime is 243223553743691. The next prime is 243223553743769. The reversal of 243223553743700 is 7347355322342.

It can be written as a sum of positive squares in 6 ways, for example, as 146657476889284 + 96566076854416 = 12110222^2 + 9826804^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 264445022 + ... + 265363178.

Almost surely, 2^{243223553743700} is an apocalyptic number.

243223553743700 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 243223553743700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268799253888606).

243223553743700 is an abundant number, since it is smaller than the sum of its proper divisors (294374954033512).

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

243223553743700 is a wasteful number, since it uses less digits than its factorization.

243223553743700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919050 (or 918984 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 50.

The spelling of 243223553743700 in words is "two hundred forty-three trillion, two hundred twenty-three billion, five hundred fifty-three million, seven hundred forty-three thousand, seven hundred".