128769409124 has 6 divisors (see below), whose sum is σ = 225346465974. Its totient is φ = 64384704560.

The previous prime is 128769409049. The next prime is 128769409127. The reversal of 128769409124 is 421904967821.

128769409124 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 80751452224 + 48017956900 = 284168^2 + 219130^2 .

It is a super-3 number, since 3×128769409124³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (128769409127) 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 as a sum of consecutive naturals, namely, 16096176137 + ... + 16096176144.

It is an arithmetic number, because the mean of its divisors is an integer number (37557744329).

Almost surely, 2^128769409124 is an apocalyptic number.

It is an amenable number.

128769409124 is a deficient number, since it is larger than the sum of its proper divisors (96577056850).

128769409124 is a wasteful number, since it uses less digits than its factorization.

128769409124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32192352285 (or 32192352283 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 128769409124 in words is "one hundred twenty-eight billion, seven hundred sixty-nine million, four hundred nine thousand, one hundred twenty-four".