1129478436489 has 32 divisors (see below), whose sum is σ = 1640072528640. Its totient is φ = 687259784448.

The previous prime is 1129478436377. The next prime is 1129478436491. The reversal of 1129478436489 is 9846348749211.

It is not a de Polignac number, because 1129478436489 - 2⁹ = 1129478435977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1129478436589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2407807 + ... + 2838395.

It is an arithmetic number, because the mean of its divisors is an integer number (51252266520).

Almost surely, 2^{1129478436489} is an apocalyptic number.

It is an amenable number.

1129478436489 is a deficient number, since it is larger than the sum of its proper divisors (510594092151).

1129478436489 is a wasteful number, since it uses less digits than its factorization.

1129478436489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431361.

The product of its digits is 83607552, while the sum is 66.

The spelling of 1129478436489 in words is "one trillion, one hundred twenty-nine billion, four hundred seventy-eight million, four hundred thirty-six thousand, four hundred eighty-nine".