128880432475013 has 8 divisors (see below), whose sum is σ = 136378069393536. Its totient is φ = 121540640544400.

The previous prime is 128880432474977. The next prime is 128880432475019. The reversal of 128880432475013 is 310574234088821.

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 128880432475013 - 2⁸ = 128880432474757 is a prime.

It is a super-2 number, since 2×128880432475013² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128880432475013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128880432475019) 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, 39461245298 + ... + 39461248563.

It is an arithmetic number, because the mean of its divisors is an integer number (17047258674192).

Almost surely, 2^{128880432475013} is an apocalyptic number.

It is an amenable number.

128880432475013 is a deficient number, since it is larger than the sum of its proper divisors (7497636918523).

128880432475013 is an equidigital number, since it uses as much as digits as its factorization.

128880432475013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78922493955.

The product of its (nonzero) digits is 10321920, while the sum is 56.

The spelling of 128880432475013 in words is "one hundred twenty-eight trillion, eight hundred eighty billion, four hundred thirty-two million, four hundred seventy-five thousand, thirteen".