1278982053888 has 896 divisors, whose sum is σ = 4565808414720. Its totient is φ = 308249886720.

The previous prime is 1278982053883. The next prime is 1278982053931. The reversal of 1278982053888 is 8883502898721.

It is a tau number, because it is divible by the number of its divisors (896).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1278982053883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2670108433 + ... + 2670108911.

It is an arithmetic number, because the mean of its divisors is an integer number (5095768320).

Almost surely, 2^{1278982053888} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1278982053888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2282904207360).

1278982053888 is an abundant number, since it is smaller than the sum of its proper divisors (3286826360832).

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

1278982053888 is a wasteful number, since it uses less digits than its factorization.

1278982053888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 123863040, while the sum is 69.

The spelling of 1278982053888 in words is "one trillion, two hundred seventy-eight billion, nine hundred eighty-two million, fifty-three thousand, eight hundred eighty-eight".