128805097305 has 8 divisors (see below), whose sum is σ = 206088155712. Its totient is φ = 68696051888.

The previous prime is 128805097273. The next prime is 128805097321. The reversal of 128805097305 is 503790508821.

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 128805097305 - 2⁵ = 128805097273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4293503229 + ... + 4293503258.

It is an arithmetic number, because the mean of its divisors is an integer number (25761019464).

Almost surely, 2^128805097305 is an apocalyptic number.

128805097305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128805097305 is a deficient number, since it is larger than the sum of its proper divisors (77283058407).

128805097305 is an equidigital number, since it uses as much as digits as its factorization.

128805097305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8587006495.

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 128805097305 in words is "one hundred twenty-eight billion, eight hundred five million, ninety-seven thousand, three hundred five".