11705878180 has 12 divisors (see below), whose sum is σ = 24582344220. Its totient is φ = 4682351264.

The previous prime is 11705878127. The next prime is 11705878187. The reversal of 11705878180 is 8187850711.

11705878180 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5222085696 + 6483792484 = 72264^2 + 80522^2 .

It is a super-2 number, since 2×11705878180² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11705878180.

It is not an unprimeable number, because it can be changed into a prime (11705878187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292646935 + ... + 292646974.

It is an arithmetic number, because the mean of its divisors is an integer number (2048528685).

Almost surely, 2^11705878180 is an apocalyptic number.

11705878180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11705878180 is an abundant number, since it is smaller than the sum of its proper divisors (12876466040).

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

11705878180 is a wasteful number, since it uses less digits than its factorization.

11705878180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585293918 (or 585293916 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 46.

The spelling of 11705878180 in words is "eleven billion, seven hundred five million, eight hundred seventy-eight thousand, one hundred eighty".