8338681620864 has 384 divisors, whose sum is σ = 29168961256800. Its totient is φ = 2337525485568.

The previous prime is 8338681620851. The next prime is 8338681620949. The reversal of 8338681620864 is 4680261868338.

8338681620864 is a `hidden beast` number, since 8 + 338 + 68 + 162 + 0 + 86 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×8338681620864² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

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, 8510694 + ... + 9439770.

Almost surely, 2^{8338681620864} is an apocalyptic number.

8338681620864 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 8338681620864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14584480628400).

8338681620864 is an abundant number, since it is smaller than the sum of its proper divisors (20830279635936).

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

8338681620864 is a wasteful number, since it uses less digits than its factorization.

8338681620864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929167 (or 929142 counting only the distinct ones).

The product of its (nonzero) digits is 63700992, while the sum is 63.

The spelling of 8338681620864 in words is "eight trillion, three hundred thirty-eight billion, six hundred eighty-one million, six hundred twenty thousand, eight hundred sixty-four".