11550004000 has 192 divisors, whose sum is σ = 31089108960. Its totient is φ = 4197580800.

The previous prime is 11550003929. The next prime is 11550004021. The reversal of 11550004000 is 40005511.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 559417104 + 10990586896 = 23652^2 + 104836^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1969072 + ... + 1974928.

Almost surely, 2^11550004000 is an apocalyptic number.

11550004000 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 11550004000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15544554480).

11550004000 is an abundant number, since it is smaller than the sum of its proper divisors (19539104960).

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

11550004000 is a wasteful number, since it uses less digits than its factorization.

11550004000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5928 (or 5910 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

Adding to 11550004000 its reverse (40005511), we get a palindrome (11590009511).

The spelling of 11550004000 in words is "eleven billion, five hundred fifty million, four thousand".