128069489873 has 8 divisors (see below), whose sum is σ = 145179988800. Its totient is φ = 111995990928.

The previous prime is 128069489839. The next prime is 128069489881. The reversal of 128069489873 is 378984960821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128069489873 - 2³⁶ = 59350013137 is a prime.

It is a super-2 number, since 2×128069489873² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128069489803) 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, 259249733 + ... + 259250226.

It is an arithmetic number, because the mean of its divisors is an integer number (18147498600).

Almost surely, 2^128069489873 is an apocalyptic number.

128069489873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

128069489873 is a deficient number, since it is larger than the sum of its proper divisors (17110498927).

128069489873 is a wasteful number, since it uses less digits than its factorization.

128069489873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518499991.

The product of its (nonzero) digits is 41803776, while the sum is 65.

The spelling of 128069489873 in words is "one hundred twenty-eight billion, sixty-nine million, four hundred eighty-nine thousand, eight hundred seventy-three".