11908487808 has 640 divisors, whose sum is σ = 42969907200. Its totient is φ = 3202467840.

The previous prime is 11908487791. The next prime is 11908487849. The reversal of 11908487808 is 80878480911.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 150740313 + ... + 150740391.

It is an arithmetic number, because the mean of its divisors is an integer number (67140480).

Almost surely, 2^11908487808 is an apocalyptic number.

11908487808 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 11908487808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21484953600).

11908487808 is an abundant number, since it is smaller than the sum of its proper divisors (31061419392).

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

11908487808 is an equidigital number, since it uses as much as digits as its factorization.

11908487808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 54.

The spelling of 11908487808 in words is "eleven billion, nine hundred eight million, four hundred eighty-seven thousand, eight hundred eight".