99543717504 has 768 divisors, whose sum is σ = 375319526400. Its totient is φ = 25510256640.

The previous prime is 99543717421. The next prime is 99543717521. The reversal of 99543717504 is 40571734599.

99543717504 is a `hidden beast` number, since 9 + 95 + 4 + 37 + 17 + 504 = 666.

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

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, 213155479 + ... + 213155945.

It is an arithmetic number, because the mean of its divisors is an integer number (488697300).

Almost surely, 2^99543717504 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 99543717504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187659763200).

99543717504 is an abundant number, since it is smaller than the sum of its proper divisors (275775808896).

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

99543717504 is a wasteful number, since it uses less digits than its factorization.

99543717504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 54.

The spelling of 99543717504 in words is "ninety-nine billion, five hundred forty-three million, seven hundred seventeen thousand, five hundred four".