240666220800 has 648 divisors, whose sum is σ = 937077523200. Its totient is φ = 58695598080.

The previous prime is 240666220777. The next prime is 240666220831. The reversal of 240666220800 is 8022666042.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 31733809 + ... + 31741391.

Almost surely, 2^240666220800 is an apocalyptic number.

240666220800 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 240666220800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468538761600).

240666220800 is an abundant number, since it is smaller than the sum of its proper divisors (696411302400).

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

240666220800 is a wasteful number, since it uses less digits than its factorization.

240666220800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7663 (or 7641 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

Adding to 240666220800 its reverse (8022666042), we get a palindrome (248688886842).

The spelling of 240666220800 in words is "two hundred forty billion, six hundred sixty-six million, two hundred twenty thousand, eight hundred".