99831247056 has 120 divisors (see below), whose sum is σ = 281822542560. Its totient is φ = 32988384000.

The previous prime is 99831247039. The next prime is 99831247067. The reversal of 99831247056 is 65074213899.

99831247056 is a `hidden beast` number, since 9 + 98 + 31 + 2 + 470 + 56 = 666.

It is a super-2 number, since 2×99831247056² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 99831246993 and 99831247011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8526006 + ... + 8537706.

It is an arithmetic number, because the mean of its divisors is an integer number (2348521188).

It is a 1-persistent number, because it is pandigital, but 2⋅99831247056 = 199662494112 is not.

Almost surely, 2^99831247056 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 99831247056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140911271280).

99831247056 is an abundant number, since it is smaller than the sum of its proper divisors (181991295504).

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

99831247056 is a wasteful number, since it uses less digits than its factorization.

99831247056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12225 (or 12216 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 99831247056 in words is "ninety-nine billion, eight hundred thirty-one million, two hundred forty-seven thousand, fifty-six".