818784676320 has 384 divisors, whose sum is σ = 2845938364416. Its totient is φ = 196614168576.

The previous prime is 818784676309. The next prime is 818784676363. The reversal of 818784676320 is 23676487818.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 92965357 + ... + 92974163.

It is an arithmetic number, because the mean of its divisors is an integer number (7411297824).

Almost surely, 2^818784676320 is an apocalyptic number.

818784676320 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 818784676320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1422969182208).

818784676320 is an abundant number, since it is smaller than the sum of its proper divisors (2027153688096).

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

818784676320 is a wasteful number, since it uses less digits than its factorization.

818784676320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9202 (or 9194 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 60.

The spelling of 818784676320 in words is "eight hundred eighteen billion, seven hundred eighty-four million, six hundred seventy-six thousand, three hundred twenty".