2128385584686 has 64 divisors (see below), whose sum is σ = 4627200061440. Its totient is φ = 650699723520.

The previous prime is 2128385584681. The next prime is 2128385584739. The reversal of 2128385584686 is 6864855838212.

It is a super-3 number, since 3×2128385584686³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128385584681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1815895 + ... + 2748498.

It is an arithmetic number, because the mean of its divisors is an integer number (72300000960).

Almost surely, 2^{2128385584686} is an apocalyptic number.

2128385584686 is an abundant number, since it is smaller than the sum of its proper divisors (2498814476754).

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

2128385584686 is a wasteful number, since it uses less digits than its factorization.

2128385584686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4564561.

The product of its digits is 176947200, while the sum is 66.

The spelling of 2128385584686 in words is "two trillion, one hundred twenty-eight billion, three hundred eighty-five million, five hundred eighty-four thousand, six hundred eighty-six".