99998279029792 has 384 divisors, whose sum is σ = 234989376556032. Its totient is φ = 41292066816000.

The previous prime is 99998279029739. The next prime is 99998279029849. The reversal of 99998279029792 is 29792097289999.

It is a junction number, because it is equal to n+sod(n) for n = 99998279029697 and 99998279029706.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 66978082998 + ... + 66978084490.

It is an arithmetic number, because the mean of its divisors is an integer number (611951501448).

Almost surely, 2^{99998279029792} 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 99998279029792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117494688278016).

99998279029792 is an abundant number, since it is smaller than the sum of its proper divisors (134991097526240).

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

99998279029792 is a wasteful number, since it uses less digits than its factorization.

99998279029792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404 (or 2396 counting only the distinct ones).

The product of its (nonzero) digits is 14999390784, while the sum is 91.

The spelling of 99998279029792 in words is "ninety-nine trillion, nine hundred ninety-eight billion, two hundred seventy-nine million, twenty-nine thousand, seven hundred ninety-two".