818485560800 has 288 divisors, whose sum is σ = 2078371975680. Its totient is φ = 314539315200.

The previous prime is 818485560793. The next prime is 818485560821. The reversal of 818485560800 is 8065584818.

It is a super-2 number, since 2×818485560800² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1433424515 + ... + 1433425085.

It is an arithmetic number, because the mean of its divisors is an integer number (7216569360).

Almost surely, 2^818485560800 is an apocalyptic number.

818485560800 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 818485560800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1039185987840).

818485560800 is an abundant number, since it is smaller than the sum of its proper divisors (1259886414880).

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

818485560800 is a wasteful number, since it uses less digits than its factorization.

818485560800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 2457600, while the sum is 53.

The spelling of 818485560800 in words is "eight hundred eighteen billion, four hundred eighty-five million, five hundred sixty thousand, eight hundred".