99891415152 has 120 divisors (see below), whose sum is σ = 283396099584. Its totient is φ = 32842962432.

The previous prime is 99891415133. The next prime is 99891415187. The reversal of 99891415152 is 25151419899.

99891415152 is a `hidden beast` number, since 9 + 9 + 89 + 1 + 41 + 515 + 2 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3148038 + ... + 3179610.

Almost surely, 2^99891415152 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 99891415152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141698049792).

99891415152 is an abundant number, since it is smaller than the sum of its proper divisors (183504684432).

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

99891415152 is a wasteful number, since it uses less digits than its factorization.

99891415152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31887 (or 31878 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 54.

The spelling of 99891415152 in words is "ninety-nine billion, eight hundred ninety-one million, four hundred fifteen thousand, one hundred fifty-two".