2580831666 has 96 divisors (see below), whose sum is σ = 6710040000. Its totient is φ = 733126464.

The previous prime is 2580831653. The next prime is 2580831667. The reversal of 2580831666 is 6661380852.

It is not an unprimeable number, because it can be changed into a prime (2580831667) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 470910 + ... + 476358.

It is an arithmetic number, because the mean of its divisors is an integer number (69896250).

Almost surely, 2^2580831666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2580831666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3355020000).

2580831666 is an abundant number, since it is smaller than the sum of its proper divisors (4129208334).

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

2580831666 is a wasteful number, since it uses less digits than its factorization.

2580831666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5653 (or 5640 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 2580831666 is about 50801.8864413518. The cubic root of 2580831666 is about 1371.6813260985.

The spelling of 2580831666 in words is "two billion, five hundred eighty million, eight hundred thirty-one thousand, six hundred sixty-six".