2178707712 has 72 divisors (see below), whose sum is σ = 5841146976. Its totient is φ = 720900096.

The previous prime is 2178707689. The next prime is 2178707717. The reversal of 2178707712 is 2177078712.

It is not an unprimeable number, because it can be changed into a prime (2178707717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94863 + ... + 115569.

Almost surely, 2^2178707712 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 2178707712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2920573488).

2178707712 is an abundant number, since it is smaller than the sum of its proper divisors (3662439264).

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

2178707712 is a wasteful number, since it uses less digits than its factorization.

2178707712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20863 (or 20849 counting only the distinct ones).

The product of its (nonzero) digits is 76832, while the sum is 42.

The square root of 2178707712 is about 46676.6291842074. The cubic root of 2178707712 is about 1296.3819937831.

The spelling of 2178707712 in words is "two billion, one hundred seventy-eight million, seven hundred seven thousand, seven hundred twelve".