18336326400 has 1080 divisors, whose sum is σ = 80473293824. Its totient is φ = 4031078400.

The previous prime is 18336326399. The next prime is 18336326413. The reversal of 18336326400 is 462363381.

18336326400 is a `hidden beast` number, since 1 + 8 + 3 + 3 + 6 + 3 + 2 + 640 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1080).

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 119 ways as a sum of consecutive naturals, for example, 112492719 + ... + 112492881.

Almost surely, 2^18336326400 is an apocalyptic number.

18336326400 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 18336326400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40236646912).

18336326400 is an abundant number, since it is smaller than the sum of its proper divisors (62136967424).

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

18336326400 is a wasteful number, since it uses less digits than its factorization.

18336326400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

Adding to 18336326400 its reverse (462363381), we get a palindrome (18798689781).

The spelling of 18336326400 in words is "eighteen billion, three hundred thirty-six million, three hundred twenty-six thousand, four hundred".