1128969421440 has 512 divisors, whose sum is σ = 4140934963200. Its totient is φ = 256285016064.

The previous prime is 1128969421417. The next prime is 1128969421471. The reversal of 1128969421440 is 441249698211.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2438378649 + ... + 2438379111.

It is an arithmetic number, because the mean of its divisors is an integer number (8087763600).

Almost surely, 2^{1128969421440} is an apocalyptic number.

1128969421440 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 1128969421440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2070467481600).

1128969421440 is an abundant number, since it is smaller than the sum of its proper divisors (3011965541760).

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

1128969421440 is a wasteful number, since it uses less digits than its factorization.

1128969421440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344 (or 1332 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The spelling of 1128969421440 in words is "one trillion, one hundred twenty-eight billion, nine hundred sixty-nine million, four hundred twenty-one thousand, four hundred forty".