11809418256 has 60 divisors (see below), whose sum is σ = 34116110080. Its totient is φ = 3809488320.

The previous prime is 11809418249. The next prime is 11809418267. The reversal of 11809418256 is 65281490811.

It is a happy number.

11809418256 is a `hidden beast` number, since 1 + 180 + 9 + 418 + 2 + 56 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1318276 + ... + 1327203.

Almost surely, 2^11809418256 is an apocalyptic number.

11809418256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11809418256 is an abundant number, since it is smaller than the sum of its proper divisors (22306691824).

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

11809418256 is a wasteful number, since it uses less digits than its factorization.

11809418256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645524 (or 2645515 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The spelling of 11809418256 in words is "eleven billion, eight hundred nine million, four hundred eighteen thousand, two hundred fifty-six".