11603998120 has 192 divisors, whose sum is σ = 31709905920. Its totient is φ = 3767616000.

The previous prime is 11603998093. The next prime is 11603998121. The reversal of 11603998120 is 2189930611.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (11603998121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5495865 + ... + 5497975.

It is an arithmetic number, because the mean of its divisors is an integer number (165155760).

Almost surely, 2^11603998120 is an apocalyptic number.

11603998120 is a gapful number since it is divisible by the number (10) 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 11603998120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15854952960).

11603998120 is an abundant number, since it is smaller than the sum of its proper divisors (20105907800).

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

11603998120 is a wasteful number, since it uses less digits than its factorization.

11603998120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208 (or 2173 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 11603998120 in words is "eleven billion, six hundred three million, nine hundred ninety-eight thousand, one hundred twenty".