11800988471808 has 480 divisors, whose sum is σ = 36786217406400. Its totient is φ = 3734852419584.

The previous prime is 11800988471791. The next prime is 11800988471861. The reversal of 11800988471808 is 80817488900811.

It is a happy number.

11800988471808 is a `hidden beast` number, since 1 + 1 + 8 + 0 + 0 + 9 + 88 + 471 + 80 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1001860863 + ... + 1001872641.

It is an arithmetic number, because the mean of its divisors is an integer number (76637952930).

Almost surely, 2^{11800988471808} is an apocalyptic number.

11800988471808 is a gapful number since it is divisible by the number (18) 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 11800988471808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18393108703200).

11800988471808 is an abundant number, since it is smaller than the sum of its proper divisors (24985228934592).

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

11800988471808 is a wasteful number, since it uses less digits than its factorization.

11800988471808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11989 (or 11944 counting only the distinct ones).

The product of its (nonzero) digits is 8257536, while the sum is 63.

The spelling of 11800988471808 in words is "eleven trillion, eight hundred billion, nine hundred eighty-eight million, four hundred seventy-one thousand, eight hundred eight".