2118761054208 has 174 divisors, whose sum is σ = 6127844578154. Its totient is φ = 705448378368.

The previous prime is 2118761054093. The next prime is 2118761054209. The reversal of 2118761054208 is 8024501678112.

2118761054208 is a `hidden beast` number, since 2 + 1 + 1 + 8 + 7 + 610 + 5 + 4 + 20 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2031787966464 + 86973087744 = 1425408^2 + 294912^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118761054209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2415918666 + ... + 2415919542.

Almost surely, 2^{2118761054208} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2118761054208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3063922289077).

2118761054208 is an abundant number, since it is smaller than the sum of its proper divisors (4009083523946).

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

2118761054208 is an frugal number, since it uses more digits than its factorization.

2118761054208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939 (or 882 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The spelling of 2118761054208 in words is "two trillion, one hundred eighteen billion, seven hundred sixty-one million, fifty-four thousand, two hundred eight".