99991308896 has 48 divisors (see below), whose sum is σ = 202286775600. Its totient is φ = 48618339840.

The previous prime is 99991308889. The next prime is 99991308929. The reversal of 99991308896 is 69880319999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2285951 + ... + 2329281.

It is an arithmetic number, because the mean of its divisors is an integer number (4214307825).

Almost surely, 2^99991308896 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 99991308896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101143387800).

99991308896 is an abundant number, since it is smaller than the sum of its proper divisors (102295466704).

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

99991308896 is a wasteful number, since it uses less digits than its factorization.

99991308896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45327 (or 45319 counting only the distinct ones).

The product of its (nonzero) digits is 68024448, while the sum is 71.

The spelling of 99991308896 in words is "ninety-nine billion, nine hundred ninety-one million, three hundred eight thousand, eight hundred ninety-six".