1280318847120 has 560 divisors, whose sum is σ = 4974393047040. Its totient is φ = 304418082816.

The previous prime is 1280318847109. The next prime is 1280318847161. The reversal of 1280318847120 is 217488130821.

1280318847120 is a `hidden beast` number, since 1 + 2 + 80 + 3 + 1 + 88 + 471 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 111 ways as a sum of consecutive naturals, for example, 18803377 + ... + 18871343.

Almost surely, 2^{1280318847120} is an apocalyptic number.

1280318847120 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 1280318847120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2487196523520).

1280318847120 is an abundant number, since it is smaller than the sum of its proper divisors (3694074199920).

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

1280318847120 is a wasteful number, since it uses less digits than its factorization.

1280318847120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68034 (or 68013 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The spelling of 1280318847120 in words is "one trillion, two hundred eighty billion, three hundred eighteen million, eight hundred forty-seven thousand, one hundred twenty".