12369568128 has 64 divisors (see below), whose sum is σ = 33989684400. Its totient is φ = 3981006848.

The previous prime is 12369568121. The next prime is 12369568151. The reversal of 12369568128 is 82186596321.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12369568121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544251 + ... + 566522.

Almost surely, 2^12369568128 is an apocalyptic number.

It is an amenable number.

12369568128 is an abundant number, since it is smaller than the sum of its proper divisors (21620116272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12369568128 is a wasteful number, since it uses less digits than its factorization.

12369568128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110819 (or 1110807 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 51.

The spelling of 12369568128 in words is "twelve billion, three hundred sixty-nine million, five hundred sixty-eight thousand, one hundred twenty-eight".