99841618656 has 240 divisors, whose sum is σ = 326422470528. Its totient is φ = 29729203200.

The previous prime is 99841618567. The next prime is 99841618757. The reversal of 99841618656 is 65681614899.

99841618656 is a `hidden beast` number, since 9 + 9 + 8 + 4 + 1 + 618 + 6 + 5 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 99841618593 and 99841618602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 996786 + ... + 1092366.

Almost surely, 2^99841618656 is an apocalyptic number.

99841618656 is a gapful number since it is divisible by the number (96) 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 99841618656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163211235264).

99841618656 is an abundant number, since it is smaller than the sum of its proper divisors (226580851872).

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

99841618656 is a wasteful number, since it uses less digits than its factorization.

99841618656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95647 (or 95630 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 63.

The spelling of 99841618656 in words is "ninety-nine billion, eight hundred forty-one million, six hundred eighteen thousand, six hundred fifty-six".