818415166464 has 1056 divisors, whose sum is σ = 2937513779200. Its totient is φ = 227370737664.

The previous prime is 818415166423. The next prime is 818415166477. The reversal of 818415166464 is 464661514818.

818415166464 is a `hidden beast` number, since 8 + 1 + 8 + 4 + 1 + 516 + 64 + 64 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 818415166464.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3670023057 + ... + 3670023279.

Almost surely, 2^818415166464 is an apocalyptic number.

818415166464 is a gapful number since it is divisible by the number (84) 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 818415166464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1468756889600).

818415166464 is an abundant number, since it is smaller than the sum of its proper divisors (2119098612736).

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

818415166464 is an equidigital number, since it uses as much as digits as its factorization.

818415166464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 278 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The spelling of 818415166464 in words is "eight hundred eighteen billion, four hundred fifteen million, one hundred sixty-six thousand, four hundred sixty-four".