11806680440 has 32 divisors (see below), whose sum is σ = 26569460160. Its totient is φ = 4721884800.

The previous prime is 11806680373. The next prime is 11806680461. The reversal of 11806680440 is 4408660811.

It is a junction number, because it is equal to n+sod(n) for n = 11806680394 and 11806680403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258530 + ... + 300750.

It is an arithmetic number, because the mean of its divisors is an integer number (830295630).

Almost surely, 2^11806680440 is an apocalyptic number.

11806680440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11806680440 is an abundant number, since it is smaller than the sum of its proper divisors (14762779720).

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

11806680440 is a wasteful number, since it uses less digits than its factorization.

11806680440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49223 (or 49219 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The spelling of 11806680440 in words is "eleven billion, eight hundred six million, six hundred eighty thousand, four hundred forty".