1113851305728 has 720 divisors, whose sum is σ = 3926163634624. Its totient is φ = 307436912640.

The previous prime is 1113851305703. The next prime is 1113851305757. The reversal of 1113851305728 is 8275031583111.

1113851305728 is a `hidden beast` number, since 1 + 11 + 38 + 5 + 1 + 30 + 572 + 8 = 666.

It is a congruent number.

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 79 ways as a sum of consecutive naturals, for example, 843187308 + ... + 843188628.

Almost surely, 2^{1113851305728} is an apocalyptic number.

1113851305728 is a gapful number since it is divisible by the number (18) 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 1113851305728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1963081817312).

1113851305728 is an abundant number, since it is smaller than the sum of its proper divisors (2812312328896).

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

1113851305728 is a wasteful number, since it uses less digits than its factorization.

1113851305728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550 (or 1527 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 45.

Adding to 1113851305728 its reverse (8275031583111), we get a palindrome (9388882888839).

The spelling of 1113851305728 in words is "one trillion, one hundred thirteen billion, eight hundred fifty-one million, three hundred five thousand, seven hundred twenty-eight".