1123445678889 has 8 divisors (see below), whose sum is σ = 1504526372640. Its totient is φ = 745664385536.

The previous prime is 1123445678863. The next prime is 1123445678987. The reversal of 1123445678889 is 9888765443211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1123445678889 - 2²⁷ = 1123311461161 is a prime.

It is a super-2 number, since 2×1123445678889² (a number of 25 digits) contains 22 as substring.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1123445671889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 824849304 + ... + 824850665.

It is an arithmetic number, because the mean of its divisors is an integer number (188065796580).

Almost surely, 2^{1123445678889} is an apocalyptic number.

It is an amenable number.

1123445678889 is a deficient number, since it is larger than the sum of its proper divisors (381080693751).

1123445678889 is a wasteful number, since it uses less digits than its factorization.

1123445678889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649700199.

The product of its digits is 92897280, while the sum is 66.

The spelling of 1123445678889 in words is "one trillion, one hundred twenty-three billion, four hundred forty-five million, six hundred seventy-eight thousand, eight hundred eighty-nine".