1128440648843 has 16 divisors (see below), whose sum is σ = 1228667504640. Its totient is φ = 1032438960000.

The previous prime is 1128440648833. The next prime is 1128440648869. The reversal of 1128440648843 is 3488460448211.

It is a cyclic number.

It is not a de Polignac number, because 1128440648843 - 2¹⁶ = 1128440583307 is a prime.

It is a super-2 number, since 2×1128440648843² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1128440648833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1680158 + ... + 2253843.

It is an arithmetic number, because the mean of its divisors is an integer number (76791719040).

Almost surely, 2^{1128440648843} is an apocalyptic number.

1128440648843 is a deficient number, since it is larger than the sum of its proper divisors (100226855797).

1128440648843 is a wasteful number, since it uses less digits than its factorization.

1128440648843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3934538.

The product of its (nonzero) digits is 4718592, while the sum is 53.

The spelling of 1128440648843 in words is "one trillion, one hundred twenty-eight billion, four hundred forty million, six hundred forty-eight thousand, eight hundred forty-three".