9999536994000 has 640 divisors, whose sum is σ = 37839816668160. Its totient is φ = 2550580876800.

The previous prime is 9999536993909. The next prime is 9999536994017. The reversal of 9999536994000 is 4996359999.

9999536994000 is a `hidden beast` number, since 9 + 99 + 95 + 369 + 94 + 0 + 0 + 0 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 9999536994000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 100552302 + ... + 100651698.

It is an arithmetic number, because the mean of its divisors is an integer number (59124713544).

Almost surely, 2^{9999536994000} is an apocalyptic number.

9999536994000 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9999536994000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18919908334080).

9999536994000 is an abundant number, since it is smaller than the sum of its proper divisors (27840279674160).

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

9999536994000 is an equidigital number, since it uses as much as digits as its factorization.

9999536994000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99464 (or 99430 counting only the distinct ones).

The product of its (nonzero) digits is 191318760, while the sum is 72.

The spelling of 9999536994000 in words is "nine trillion, nine hundred ninety-nine billion, five hundred thirty-six million, nine hundred ninety-four thousand".