1199666688000 has 1664 divisors, whose sum is σ = 4754627804160. Its totient is φ = 265420800000.

The previous prime is 1199666687993. The next prime is 1199666688001. The reversal of 1199666688000 is 8866669911.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1199666688001) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11877887950 + ... + 11877888050.

It is an arithmetic number, because the mean of its divisors is an integer number (2857348440).

Almost surely, 2^{1199666688000} is an apocalyptic number.

1199666688000 is a gapful number since it is divisible by the number (10) 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 1199666688000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2377313902080).

1199666688000 is an abundant number, since it is smaller than the sum of its proper divisors (3554961116160).

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

1199666688000 is a wasteful number, since it uses less digits than its factorization.

1199666688000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 60.

The spelling of 1199666688000 in words is "one trillion, one hundred ninety-nine billion, six hundred sixty-six million, six hundred eighty-eight thousand".