1278792800000 has 216 divisors, whose sum is σ = 3201353818992. Its totient is φ = 509783040000.

The previous prime is 1278792799981. The next prime is 1278792800039. The reversal of 1278792800000 is 82978721.

It is a super-2 number, since 2×1278792800000² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 250397447 + ... + 250402553.

Almost surely, 2^{1278792800000} is an apocalyptic number.

1278792800000 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 1278792800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1600676909496).

1278792800000 is an abundant number, since it is smaller than the sum of its proper divisors (1922561018992).

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

1278792800000 is an frugal number, since it uses more digits than its factorization.

1278792800000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5461 (or 5427 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 44.

The spelling of 1278792800000 in words is "one trillion, two hundred seventy-eight billion, seven hundred ninety-two million, eight hundred thousand".