5821861566 has 32 divisors (see below), whose sum is σ = 12129638400. Its totient is φ = 1860783840.

The previous prime is 5821861559. The next prime is 5821861583. The reversal of 5821861566 is 6651681285.

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 15 ways as a sum of consecutive naturals, for example, 123306 + ... + 163853.

It is an arithmetic number, because the mean of its divisors is an integer number (379051200).

Almost surely, 2^5821861566 is an apocalyptic number.

5821861566 is an abundant number, since it is smaller than the sum of its proper divisors (6307776834).

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

5821861566 is a wasteful number, since it uses less digits than its factorization.

5821861566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287304.

The product of its digits is 691200, while the sum is 48.

The square root of 5821861566 is about 76301.1242774312. The cubic root of 5821861566 is about 1798.9563462331.

The spelling of 5821861566 in words is "five billion, eight hundred twenty-one million, eight hundred sixty-one thousand, five hundred sixty-six".