1213793280000 has 1680 divisors, whose sum is σ = 5173733575296. Its totient is φ = 268369920000.

The previous prime is 1213793279977. The next prime is 1213793280101. The reversal of 1213793280000 is 823973121.

1213793280000 is a `hidden beast` number, since 1 + 2 + 1 + 379 + 3 + 280 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1680).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 119 ways as a sum of consecutive naturals, for example, 17095679965 + ... + 17095680035.

Almost surely, 2^{1213793280000} is an apocalyptic number.

1213793280000 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 1213793280000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2586866787648).

1213793280000 is an abundant number, since it is smaller than the sum of its proper divisors (3959940295296).

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

1213793280000 is an frugal number, since it uses more digits than its factorization.

1213793280000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 1213793280000 in words is "one trillion, two hundred thirteen billion, seven hundred ninety-three million, two hundred eighty thousand".