11800537320 has 512 divisors, whose sum is σ = 44939059200. Its totient is φ = 2436403200.

The previous prime is 11800537319. The next prime is 11800537453. The reversal of 11800537320 is 2373500811.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11445205 + ... + 11446235.

It is an arithmetic number, because the mean of its divisors is an integer number (87771600).

Almost surely, 2^11800537320 is an apocalyptic number.

11800537320 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 11800537320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22469529600).

11800537320 is an abundant number, since it is smaller than the sum of its proper divisors (33138521880).

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

11800537320 is a wasteful number, since it uses less digits than its factorization.

11800537320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121 (or 1117 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The spelling of 11800537320 in words is "eleven billion, eight hundred million, five hundred thirty-seven thousand, three hundred twenty".