99979952184 has 128 divisors (see below), whose sum is σ = 317525184000. Its totient is φ = 28554135552.

The previous prime is 99979952173. The next prime is 99979952209. The reversal of 99979952184 is 48125997999.

99979952184 is a `hidden beast` number, since 9 + 9 + 9 + 7 + 99 + 521 + 8 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4150527 + ... + 4174545.

It is an arithmetic number, because the mean of its divisors is an integer number (2480665500).

Almost surely, 2^99979952184 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 99979952184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158762592000).

99979952184 is an abundant number, since it is smaller than the sum of its proper divisors (217545231816).

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

99979952184 is a wasteful number, since it uses less digits than its factorization.

99979952184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26794 (or 26784 counting only the distinct ones).

The product of its digits is 132269760, while the sum is 72.

The spelling of 99979952184 in words is "ninety-nine billion, nine hundred seventy-nine million, nine hundred fifty-two thousand, one hundred eighty-four".