243553896090 has 1024 divisors, whose sum is σ = 806215680000. Its totient is φ = 51808813056.

The previous prime is 243553896077. The next prime is 243553896127. The reversal of 243553896090 is 90698355342.

243553896090 is a `hidden beast` number, since 2 + 4 + 3 + 553 + 89 + 6 + 0 + 9 + 0 = 666.

243553896090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 511 ways as a sum of consecutive naturals, for example, 3082960671 + ... + 3082960749.

It is an arithmetic number, because the mean of its divisors is an integer number (787320000).

Almost surely, 2^243553896090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243553896090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403107840000).

243553896090 is an abundant number, since it is smaller than the sum of its proper divisors (562661783910).

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

243553896090 is a wasteful number, since it uses less digits than its factorization.

243553896090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 243553896090 in words is "two hundred forty-three billion, five hundred fifty-three million, eight hundred ninety-six thousand, ninety".