128869954909738 has 16 divisors (see below), whose sum is σ = 223716377422080. Its totient is φ = 54530866995696.

The previous prime is 128869954909733. The next prime is 128869954909741. The reversal of 128869954909738 is 837909459968821.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (128869954909733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58259472181 + ... + 58259474392.

It is an arithmetic number, because the mean of its divisors is an integer number (13982273588880).

It is a 2-persistent number, because it is pandigital, and so is 2⋅128869954909738 = 257739909819476, but 3⋅128869954909738 = 386609864729214 is not.

Almost surely, 2^{128869954909738} is an apocalyptic number.

128869954909738 is a deficient number, since it is larger than the sum of its proper divisors (94846422512342).

128869954909738 is a wasteful number, since it uses less digits than its factorization.

128869954909738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116518946661.

The product of its (nonzero) digits is 16930529280, while the sum is 88.

The spelling of 128869954909738 in words is "one hundred twenty-eight trillion, eight hundred sixty-nine billion, nine hundred fifty-four million, nine hundred nine thousand, seven hundred thirty-eight".