9919448812000 has 192 divisors, whose sum is σ = 29996414308224. Its totient is φ = 3139341926400.

The previous prime is 9919448811953. The next prime is 9919448812003. The reversal of 9919448812000 is 2188449199.

It is a happy number.

It is a super-2 number, since 2×9919448812000² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9919448812003) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 13261617 + ... + 13989616.

It is an arithmetic number, because the mean of its divisors is an integer number (156231324522).

Almost surely, 2^{9919448812000} is an apocalyptic number.

It is an amenable number.

9919448812000 is an abundant number, since it is smaller than the sum of its proper divisors (20076965496224).

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

9919448812000 is a wasteful number, since it uses less digits than its factorization.

9919448812000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27251278 (or 27251260 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 55.

The spelling of 9919448812000 in words is "nine trillion, nine hundred nineteen billion, four hundred forty-eight million, eight hundred twelve thousand".