2118187688472 has 48 divisors (see below), whose sum is σ = 5921815049280. Its totient is φ = 683286350400.

The previous prime is 2118187688467. The next prime is 2118187688489. The reversal of 2118187688472 is 2748867818112.

2118187688472 is a `hidden beast` number, since 2 + 1 + 1 + 8 + 1 + 87 + 6 + 88 + 472 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 474502179 + ... + 474506642.

It is an arithmetic number, because the mean of its divisors is an integer number (123371146860).

Almost surely, 2^{2118187688472} is an apocalyptic number.

It is an amenable number.

2118187688472 is an abundant number, since it is smaller than the sum of its proper divisors (3803627360808).

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

2118187688472 is a wasteful number, since it uses less digits than its factorization.

2118187688472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949008864 (or 949008857 counting only the distinct ones).

The product of its digits is 19267584, while the sum is 63.

The spelling of 2118187688472 in words is "two trillion, one hundred eighteen billion, one hundred eighty-seven million, six hundred eighty-eight thousand, four hundred seventy-two".