818123473800 has 960 divisors, whose sum is σ = 3111229440000. Its totient is φ = 198483955200.

The previous prime is 818123473789. The next prime is 818123473861. The reversal of 818123473800 is 8374321818.

818123473800 is a `hidden beast` number, since 8 + 1 + 81 + 23 + 473 + 80 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 1707981961 + ... + 1707982439.

It is an arithmetic number, because the mean of its divisors is an integer number (3240864000).

Almost surely, 2^818123473800 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 818123473800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1555614720000).

818123473800 is an abundant number, since it is smaller than the sum of its proper divisors (2293105966200).

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

818123473800 is a wasteful number, since it uses less digits than its factorization.

818123473800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 818123473800 in words is "eight hundred eighteen billion, one hundred twenty-three million, four hundred seventy-three thousand, eight hundred".