1128360421440 has 448 divisors, whose sum is σ = 4617178675200. Its totient is φ = 254060623872.

The previous prime is 1128360421439. The next prime is 1128360421471. The reversal of 1128360421440 is 441240638211.

1128360421440 is a `hidden beast` number, since 1 + 1 + 2 + 8 + 3 + 604 + 2 + 1 + 4 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (448).

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

It is a junction number, because it is equal to n+sod(n) for n = 1128360421395 and 1128360421404.

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, 3912931 + ... + 4191389.

It is an arithmetic number, because the mean of its divisors is an integer number (10306202400).

Almost surely, 2^{1128360421440} is an apocalyptic number.

1128360421440 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 1128360421440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2308589337600).

1128360421440 is an abundant number, since it is smaller than the sum of its proper divisors (3488818253760).

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

1128360421440 is a wasteful number, since it uses less digits than its factorization.

1128360421440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278559 (or 278543 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 1128360421440 in words is "one trillion, one hundred twenty-eight billion, three hundred sixty million, four hundred twenty-one thousand, four hundred forty".