13128789669 has 16 divisors (see below), whose sum is σ = 17832837120. Its totient is φ = 8589962160.

The previous prime is 13128789647. The next prime is 13128789671. The reversal of 13128789669 is 96698782131.

13128789669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13128789669 - 2⁵ = 13128789637 is a prime.

It is a super-2 number, since 2×13128789669² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13128789679) 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 15 ways as a sum of consecutive naturals, for example, 126277 + ... + 205434.

It is an arithmetic number, because the mean of its divisors is an integer number (1114552320).

Almost surely, 2^13128789669 is an apocalyptic number.

It is an amenable number.

13128789669 is a deficient number, since it is larger than the sum of its proper divisors (4704047451).

13128789669 is a wasteful number, since it uses less digits than its factorization.

13128789669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331960.

The product of its digits is 7838208, while the sum is 60.

The spelling of 13128789669 in words is "thirteen billion, one hundred twenty-eight million, seven hundred eighty-nine thousand, six hundred sixty-nine".