28550583331 has 16 divisors (see below), whose sum is σ = 29637498240. Its totient is φ = 27482757120.

The previous prime is 28550583283. The next prime is 28550583379. The reversal of 28550583331 is 13338505582.

It is an interprime number because it is at equal distance from previous prime (28550583283) and next prime (28550583379).

It is a cyclic number.

It is not a de Polignac number, because 28550583331 - 2⁷ = 28550583203 is a prime.

It is a super-2 number, since 2×28550583331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28550583431) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7891635 + ... + 7895251.

It is an arithmetic number, because the mean of its divisors is an integer number (1852343640).

Almost surely, 2^28550583331 is an apocalyptic number.

28550583331 is a deficient number, since it is larger than the sum of its proper divisors (1086914909).

28550583331 is a wasteful number, since it uses less digits than its factorization.

28550583331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6174.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 28550583331 in words is "twenty-eight billion, five hundred fifty million, five hundred eighty-three thousand, three hundred thirty-one".