1128380843520 has 720 divisors, whose sum is σ = 4588901233488. Its totient is φ = 255477841920.

The previous prime is 1128380843489. The next prime is 1128380843539. The reversal of 1128380843520 is 253480838211.

1128380843520 is a `hidden beast` number, since 1 + 1 + 2 + 8 + 3 + 80 + 8 + 43 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 120794050 + ... + 120803390.

Almost surely, 2^{1128380843520} is an apocalyptic number.

1128380843520 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 1128380843520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2294450616744).

1128380843520 is an abundant number, since it is smaller than the sum of its proper divisors (3460520389968).

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

1128380843520 is a wasteful number, since it uses less digits than its factorization.

1128380843520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9491 (or 9465 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 1128380843520 in words is "one trillion, one hundred twenty-eight billion, three hundred eighty million, eight hundred forty-three thousand, five hundred twenty".