1805222700800 has 216 divisors, whose sum is σ = 4540748133936. Its totient is φ = 710394347520.

The previous prime is 1805222700689. The next prime is 1805222700839. The reversal of 1805222700800 is 80072225081.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 401783354 + ... + 401787846.

Almost surely, 2^{1805222700800} is an apocalyptic number.

1805222700800 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 1805222700800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2270374066968).

1805222700800 is an abundant number, since it is smaller than the sum of its proper divisors (2735525433136).

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

1805222700800 is an equidigital number, since it uses as much as digits as its factorization.

1805222700800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523 (or 5504 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

Adding to 1805222700800 its reverse (80072225081), we get a palindrome (1885294925881).

The spelling of 1805222700800 in words is "one trillion, eight hundred five billion, two hundred twenty-two million, seven hundred thousand, eight hundred".