11810644992 has 440 divisors, whose sum is σ = 37949611392. Its totient is φ = 3649536000.

The previous prime is 11810644987. The next prime is 11810645039. The reversal of 11810644992 is 29944601811.

It is a happy number.

11810644992 is a `hidden beast` number, since 1 + 18 + 106 + 449 + 92 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 78216117 + ... + 78216267.

Almost surely, 2^11810644992 is an apocalyptic number.

11810644992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11810644992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18974805696).

11810644992 is an abundant number, since it is smaller than the sum of its proper divisors (26138966400).

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

11810644992 is a wasteful number, since it uses less digits than its factorization.

11810644992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 11810644992 in words is "eleven billion, eight hundred ten million, six hundred forty-four thousand, nine hundred ninety-two".