1123607989899 has 48 divisors (see below), whose sum is σ = 1741982161920. Its totient is φ = 722993856480.

The previous prime is 1123607989891. The next prime is 1123607989901. The reversal of 1123607989899 is 9989897063211.

1123607989899 is a `hidden beast` number, since 1 + 1 + 2 + 3 + 607 + 9 + 8 + 9 + 8 + 9 + 9 = 666.

It is not a de Polignac number, because 1123607989899 - 2³ = 1123607989891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1123607989891) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 2658229 + ... + 3051785.

It is an arithmetic number, because the mean of its divisors is an integer number (36291295040).

Almost surely, 2^{1123607989899} is an apocalyptic number.

1123607989899 is a deficient number, since it is larger than the sum of its proper divisors (618374172021).

1123607989899 is an equidigital number, since it uses as much as digits as its factorization.

1123607989899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393982 (or 393970 counting only the distinct ones).

The product of its (nonzero) digits is 105815808, while the sum is 72.

The spelling of 1123607989899 in words is "one trillion, one hundred twenty-three billion, six hundred seven million, nine hundred eighty-nine thousand, eight hundred ninety-nine".