9199905124992 has 128 divisors (see below), whose sum is σ = 24554333552640. Its totient is φ = 3051976485888.

The previous prime is 9199905124933. The next prime is 9199905125017. The reversal of 9199905124992 is 2994215099919.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68564913 + ... + 68698959.

It is an arithmetic number, because the mean of its divisors is an integer number (191830730880).

Almost surely, 2^{9199905124992} 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 9199905124992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12277166776320).

9199905124992 is an abundant number, since it is smaller than the sum of its proper divisors (15354428427648).

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

9199905124992 is a wasteful number, since it uses less digits than its factorization.

9199905124992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134918 (or 134906 counting only the distinct ones).

The product of its (nonzero) digits is 42515280, while the sum is 69.

The spelling of 9199905124992 in words is "nine trillion, one hundred ninety-nine billion, nine hundred five million, one hundred twenty-four thousand, nine hundred ninety-two".