8494451856 has 480 divisors, whose sum is σ = 28598169600. Its totient is φ = 2416780800.

The previous prime is 8494451843. The next prime is 8494451909. The reversal of 8494451856 is 6581544948.

8494451856 is a `hidden beast` number, since 84 + 9 + 44 + 518 + 5 + 6 = 666.

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

It is a congruent number.

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, 57009670 + ... + 57009818.

It is an arithmetic number, because the mean of its divisors is an integer number (59579520).

Almost surely, 2^8494451856 is an apocalyptic number.

8494451856 is a gapful number since it is divisible by the number (86) 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 8494451856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14299084800).

8494451856 is an abundant number, since it is smaller than the sum of its proper divisors (20103717744).

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

8494451856 is a wasteful number, since it uses less digits than its factorization.

8494451856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 239 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 54.

The square root of 8494451856 is about 92165.3506259267. The cubic root of 8494451856 is about 2040.3834227400.

The spelling of 8494451856 in words is "eight billion, four hundred ninety-four million, four hundred fifty-one thousand, eight hundred fifty-six".