609311381056 has 189 divisors, whose sum is σ = 1439016769281. Its totient is φ = 255232233984.

The previous prime is 609311381023. The next prime is 609311381069. The reversal of 609311381056 is 650183113906.

It is a happy number.

The square root of 609311381056 is 780584.

It is a perfect power (a square), and thus also a powerful number.

609311381056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 439250817600 + 170060563456 = 662760^2 + 412384^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2316773181 + ... + 2316773443.

Almost surely, 2^609311381056 is an apocalyptic number.

609311381056 is the 780584-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 609311381056

609311381056 is an abundant number, since it is smaller than the sum of its proper divisors (829705388225).

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

609311381056 is an frugal number, since it uses more digits than its factorization.

609311381056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 609311381056 in words is "six hundred nine billion, three hundred eleven million, three hundred eighty-one thousand, fifty-six".