571261470648 has 128 divisors (see below), whose sum is σ = 1640387635200. Its totient is φ = 163958256000.

The previous prime is 571261470631. The next prime is 571261470653. The reversal of 571261470648 is 846074162175.

It is a self number, because there is not a number n which added to its sum of digits gives 571261470648.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24822715 + ... + 24845717.

It is an arithmetic number, because the mean of its divisors is an integer number (12815528400).

Almost surely, 2^571261470648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 571261470648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (820193817600).

571261470648 is an abundant number, since it is smaller than the sum of its proper divisors (1069126164552).

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

571261470648 is a wasteful number, since it uses less digits than its factorization.

571261470648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27993 (or 27989 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 571261470648 in words is "five hundred seventy-one billion, two hundred sixty-one million, four hundred seventy thousand, six hundred forty-eight".