2128688850558 has 16 divisors (see below), whose sum is σ = 4257690608016. Its totient is φ = 709510799040.

The previous prime is 2128688850557. The next prime is 2128688850569. The reversal of 2128688850558 is 8550588868212.

It is a happy number.

It is a super-3 number, since 3×2128688850558³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128688850557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12949303 + ... + 13112658.

It is an arithmetic number, because the mean of its divisors is an integer number (266105663001).

Almost surely, 2^{2128688850558} is an apocalyptic number.

2128688850558 is an abundant number, since it is smaller than the sum of its proper divisors (2129001757458).

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

2128688850558 is a wasteful number, since it uses less digits than its factorization.

2128688850558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26075579.

The product of its (nonzero) digits is 98304000, while the sum is 66.

The spelling of 2128688850558 in words is "two trillion, one hundred twenty-eight billion, six hundred eighty-eight million, eight hundred fifty thousand, five hundred fifty-eight".