2123116086789 has 6 divisors (see below), whose sum is σ = 3066723236486. Its totient is φ = 1415410724520.

The previous prime is 2123116086779. The next prime is 2123116086851. The reversal of 2123116086789 is 9876806113212.

2123116086789 is a `hidden beast` number, since 2 + 1 + 23 + 1 + 1 + 608 + 6 + 7 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1566585166689 + 556530920100 = 1251633^2 + 746010^2 .

It is not a de Polignac number, because 2123116086789 - 2⁷ = 2123116086661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123116086779) 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 5 ways as a sum of consecutive naturals, for example, 117950893702 + ... + 117950893719.

Almost surely, 2^{2123116086789} is an apocalyptic number.

It is an amenable number.

2123116086789 is a deficient number, since it is larger than the sum of its proper divisors (943607149697).

2123116086789 is a wasteful number, since it uses less digits than its factorization.

2123116086789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235901787427 (or 235901787424 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 2123116086789 in words is "two trillion, one hundred twenty-three billion, one hundred sixteen million, eighty-six thousand, seven hundred eighty-nine".