11173478400 has 540 divisors, whose sum is σ = 45848110672. Its totient is φ = 2548039680.

The previous prime is 11173478387. The next prime is 11173478471. The reversal of 11173478400 is 487437111.

11173478400 is a `hidden beast` number, since 11 + 173 + 4 + 78 + 400 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25804584 + ... + 25805016.

Almost surely, 2^11173478400 is an apocalyptic number.

11173478400 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 11173478400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22924055336).

11173478400 is an abundant number, since it is smaller than the sum of its proper divisors (34674632272).

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

11173478400 is an equidigital number, since it uses as much as digits as its factorization.

11173478400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The spelling of 11173478400 in words is "eleven billion, one hundred seventy-three million, four hundred seventy-eight thousand, four hundred".