5581881855 has 192 divisors, whose sum is σ = 11489157120. Its totient is φ = 2566080000.

The previous prime is 5581881841. The next prime is 5581881869.

5581881855 is a `hidden beast` number, since 5 + 581 + 8 + 8 + 1 + 8 + 55 = 666.

5581881855 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (5581881841) and next prime (5581881869).

It is not a de Polignac number, because 5581881855 - 2⁶ = 5581881791 is a prime.

It is a congruent number.

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 191 ways as a sum of consecutive naturals, for example, 36966030 + ... + 36966180.

It is an arithmetic number, because the mean of its divisors is an integer number (59839360).

Almost surely, 2^5581881855 is an apocalyptic number.

5581881855 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5581881855 is an abundant number, since it is smaller than the sum of its proper divisors (5907275265).

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

5581881855 is a wasteful number, since it uses less digits than its factorization.

5581881855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 274 counting only the distinct ones).

The product of its digits is 2560000, while the sum is 54.

The square root of 5581881855 is about 74711.9927120138. The cubic root of 5581881855 is about 1773.8907946649.

The spelling of 5581881855 in words is "five billion, five hundred eighty-one million, eight hundred eighty-one thousand, eight hundred fifty-five".