8411993856 has 540 divisors, whose sum is σ = 30958039728. Its totient is φ = 2257403904.

The previous prime is 8411993819. The next prime is 8411993857. The reversal of 8411993856 is 6583991148.

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 (8411993857) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 17272845 + ... + 17273331.

Almost surely, 2^8411993856 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 8411993856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15479019864).

8411993856 is an abundant number, since it is smaller than the sum of its proper divisors (22546045872).

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

8411993856 is a wasteful number, since it uses less digits than its factorization.

8411993856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 516 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 8411993856 is about 91716.9224080268. The cubic root of 8411993856 is about 2033.7597544319.

The spelling of 8411993856 in words is "eight billion, four hundred eleven million, nine hundred ninety-three thousand, eight hundred fifty-six".