2178366768 has 30 divisors (see below), whose sum is σ = 6096401844. Its totient is φ = 726122208.

The previous prime is 2178366761. The next prime is 2178366769. The reversal of 2178366768 is 8676638712.

2178366768 is a `hidden beast` number, since 217 + 8 + 366 + 7 + 68 = 666.

It is not an unprimeable number, because it can be changed into a prime (2178366761) 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, 7563630 + ... + 7563917.

Almost surely, 2^2178366768 is an apocalyptic number.

It is an amenable number.

2178366768 is an abundant number, since it is smaller than the sum of its proper divisors (3918035076).

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

2178366768 is a wasteful number, since it uses less digits than its factorization.

2178366768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15127561 (or 15127552 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 2178366768 is about 46672.9768495647. The cubic root of 2178366768 is about 1296.3143670400.

The spelling of 2178366768 in words is "two billion, one hundred seventy-eight million, three hundred sixty-six thousand, seven hundred sixty-eight".