128398508341 has 8 divisors (see below), whose sum is σ = 129848543640. Its totient is φ = 126948636672.

The previous prime is 128398508333. The next prime is 128398508347. The reversal of 128398508341 is 143805893821.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4262784100 + 124135724241 = 65290^2 + 352329^2 .

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 128398508341 - 2³ = 128398508333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128398508347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2267611 + ... + 2323543.

It is an arithmetic number, because the mean of its divisors is an integer number (16231067955).

Almost surely, 2^128398508341 is an apocalyptic number.

It is an amenable number.

128398508341 is a deficient number, since it is larger than the sum of its proper divisors (1450035299).

128398508341 is an equidigital number, since it uses as much as digits as its factorization.

128398508341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81815.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 128398508341 in words is "one hundred twenty-eight billion, three hundred ninety-eight million, five hundred eight thousand, three hundred forty-one".