855540403200 has 2112 divisors, whose sum is σ = 3796454630400. Its totient is φ = 187042037760.

The previous prime is 855540403169. The next prime is 855540403219. The reversal of 855540403200 is 2304045558.

855540403200 is a `hidden beast` number, since 8 + 5 + 5 + 5 + 40 + 403 + 200 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 14500684771 + ... + 14500684829.

Almost surely, 2^855540403200 is an apocalyptic number.

855540403200 is a gapful number since it is divisible by the number (80) 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 855540403200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1898227315200).

855540403200 is an abundant number, since it is smaller than the sum of its proper divisors (2940914227200).

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

855540403200 is an equidigital number, since it uses as much as digits as its factorization.

855540403200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 855540403200 its reverse (2304045558), we get a palindrome (857844448758).

The spelling of 855540403200 in words is "eight hundred fifty-five billion, five hundred forty million, four hundred three thousand, two hundred".