11684805580 has 36 divisors (see below), whose sum is σ = 28544313168. Its totient is φ = 4006218720.

The previous prime is 11684805563. The next prime is 11684805581. The reversal of 11684805580 is 8550848611.

It is a super-3 number, since 3×11684805580³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11684805580.

It is not an unprimeable number, because it can be changed into a prime (11684805581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5960656 + ... + 5962615.

It is an arithmetic number, because the mean of its divisors is an integer number (792897588).

Almost surely, 2^11684805580 is an apocalyptic number.

11684805580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11684805580 is an abundant number, since it is smaller than the sum of its proper divisors (16859507588).

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

11684805580 is a wasteful number, since it uses less digits than its factorization.

11684805580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11923294 (or 11923285 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 46.

The spelling of 11684805580 in words is "eleven billion, six hundred eighty-four million, eight hundred five thousand, five hundred eighty".