128686301026869 has 16 divisors (see below), whose sum is σ = 175252718949120. Its totient is φ = 83955798333120.

The previous prime is 128686301026837. The next prime is 128686301026883. The reversal of 128686301026869 is 968620103686821.

It is not a de Polignac number, because 128686301026869 - 2⁵ = 128686301026837 is a prime.

It is a super-2 number, since 2×128686301026869² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128686301021869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51667122 + ... + 54100499.

It is an arithmetic number, because the mean of its divisors is an integer number (10953294934320).

Almost surely, 2^{128686301026869} is an apocalyptic number.

It is an amenable number.

128686301026869 is a deficient number, since it is larger than the sum of its proper divisors (46566417922251).

128686301026869 is a wasteful number, since it uses less digits than its factorization.

128686301026869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105776300.

The product of its (nonzero) digits is 71663616, while the sum is 66.

The spelling of 128686301026869 in words is "one hundred twenty-eight trillion, six hundred eighty-six billion, three hundred one million, twenty-six thousand, eight hundred sixty-nine".