1199343578112 has 264 divisors, whose sum is σ = 3517416433440. Its totient is φ = 393526640640.

The previous prime is 1199343578053. The next prime is 1199343578159. The reversal of 1199343578112 is 2118753439911.

1199343578112 is a `hidden beast` number, since 1 + 1 + 9 + 93 + 435 + 7 + 8 + 112 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 607877158 + ... + 607879130.

Almost surely, 2^{1199343578112} is an apocalyptic number.

1199343578112 is a gapful number since it is divisible by the number (12) 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 1199343578112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1758708216720).

1199343578112 is an abundant number, since it is smaller than the sum of its proper divisors (2318072855328).

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

1199343578112 is a wasteful number, since it uses less digits than its factorization.

1199343578112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2999 (or 2978 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The spelling of 1199343578112 in words is "one trillion, one hundred ninety-nine billion, three hundred forty-three million, five hundred seventy-eight thousand, one hundred twelve".