818163056880 has 1680 divisors, whose sum is σ = 3455464237920. Its totient is φ = 178872385536.

The previous prime is 818163056803. The next prime is 818163056881. The reversal of 818163056880 is 88650361818.

818163056880 is a `hidden beast` number, since 8 + 18 + 1 + 63 + 0 + 568 + 8 + 0 = 666.

818163056880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×818163056880² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818163056881) by changing a digit.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 3183513712 + ... + 3183513968.

Almost surely, 2^818163056880 is an apocalyptic number.

818163056880 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 818163056880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1727732118960).

818163056880 is an abundant number, since it is smaller than the sum of its proper divisors (2637301181040).

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

818163056880 is a wasteful number, since it uses less digits than its factorization.

818163056880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 54.

The spelling of 818163056880 in words is "eight hundred eighteen billion, one hundred sixty-three million, fifty-six thousand, eight hundred eighty".