11808228440 has 32 divisors (see below), whose sum is σ = 26667306000. Its totient is φ = 4705728384.

The previous prime is 11808228437. The next prime is 11808228457. The reversal of 11808228440 is 4482280811.

It is a junction number, because it is equal to n+sod(n) for n = 11808228394 and 11808228403.

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, 537950 + ... + 559469.

Almost surely, 2^11808228440 is an apocalyptic number.

11808228440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11808228440 is an abundant number, since it is smaller than the sum of its proper divisors (14859077560).

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

11808228440 is a wasteful number, since it uses less digits than its factorization.

11808228440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097699 (or 1097695 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 38.

The spelling of 11808228440 in words is "eleven billion, eight hundred eight million, two hundred twenty-eight thousand, four hundred forty".