11800280448 has 768 divisors, whose sum is σ = 43755552000. Its totient is φ = 3085516800.

The previous prime is 11800280441. The next prime is 11800280491. The reversal of 11800280448 is 84408200811.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11800280441) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 380654193 + ... + 380654223.

It is an arithmetic number, because the mean of its divisors is an integer number (56973375).

Almost surely, 2^11800280448 is an apocalyptic number.

11800280448 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 11800280448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21877776000).

11800280448 is an abundant number, since it is smaller than the sum of its proper divisors (31955271552).

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

11800280448 is a wasteful number, since it uses less digits than its factorization.

11800280448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The spelling of 11800280448 in words is "eleven billion, eight hundred million, two hundred eighty thousand, four hundred forty-eight".