128030420266 has 8 divisors (see below), whose sum is σ = 219480720480. Its totient is φ = 54870180108.

The previous prime is 128030420251. The next prime is 128030420269. The reversal of 128030420266 is 662024030821.

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

It is not an unprimeable number, because it can be changed into a prime (128030420269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4572514996 + ... + 4572515023.

It is an arithmetic number, because the mean of its divisors is an integer number (27435090060).

Almost surely, 2^128030420266 is an apocalyptic number.

128030420266 is a deficient number, since it is larger than the sum of its proper divisors (91450300214).

128030420266 is an equidigital number, since it uses as much as digits as its factorization.

128030420266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9145030028.

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 128030420266 in words is "one hundred twenty-eight billion, thirty million, four hundred twenty thousand, two hundred sixty-six".