28550554371 has 12 divisors (see below), whose sum is σ = 41256983040. Its totient is φ = 19025721360.

The previous prime is 28550554343. The next prime is 28550554379. The reversal of 28550554371 is 17345505582.

28550554371 is a `hidden beast` number, since 2 + 8 + 550 + 55 + 43 + 7 + 1 = 666.

It is not a de Polignac number, because 28550554371 - 2⁵ = 28550554339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28550554379) 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 11 ways as a sum of consecutive naturals, for example, 642435 + ... + 685436.

It is an arithmetic number, because the mean of its divisors is an integer number (3438081920).

Almost surely, 2^28550554371 is an apocalyptic number.

28550554371 is a deficient number, since it is larger than the sum of its proper divisors (12706428669).

28550554371 is a wasteful number, since it uses less digits than its factorization.

28550554371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330266 (or 1330263 counting only the distinct ones).

The product of its (nonzero) digits is 840000, while the sum is 45.

The spelling of 28550554371 in words is "twenty-eight billion, five hundred fifty million, five hundred fifty-four thousand, three hundred seventy-one".