243724120464 has 160 divisors (see below), whose sum is σ = 722589465600. Its totient is φ = 70100154880.

The previous prime is 243724120459. The next prime is 243724120477. The reversal of 243724120464 is 464021427342.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 768517 + ... + 1038299.

It is an arithmetic number, because the mean of its divisors is an integer number (4516184160).

Almost surely, 2^243724120464 is an apocalyptic number.

243724120464 is a gapful number since it is divisible by the number (24) 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 243724120464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361294732800).

243724120464 is an abundant number, since it is smaller than the sum of its proper divisors (478865345136).

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

243724120464 is a wasteful number, since it uses less digits than its factorization.

243724120464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269893 (or 269887 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 39.

The spelling of 243724120464 in words is "two hundred forty-three billion, seven hundred twenty-four million, one hundred twenty thousand, four hundred sixty-four".