28550205126 has 12 divisors (see below), whose sum is σ = 61858777812. Its totient is φ = 9516735036.

The previous prime is 28550205109. The next prime is 28550205133. The reversal of 28550205126 is 62150205582.

It is a happy number.

28550205126 is a `hidden beast` number, since 2 + 85 + 502 + 0 + 51 + 26 = 666.

It is a super-2 number, since 2×28550205126² (a number of 22 digits) contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 793061236 + ... + 793061271.

It is an arithmetic number, because the mean of its divisors is an integer number (5154898151).

Almost surely, 2^28550205126 is an apocalyptic number.

28550205126 is an abundant number, since it is smaller than the sum of its proper divisors (33308572686).

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

28550205126 is a wasteful number, since it uses less digits than its factorization.

28550205126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586122515 (or 1586122512 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 28550205126 in words is "twenty-eight billion, five hundred fifty million, two hundred five thousand, one hundred twenty-six".