128491004306 has 32 divisors (see below), whose sum is σ = 224879462400. Its totient is φ = 55039678848.

The previous prime is 128491004281. The next prime is 128491004309. The reversal of 128491004306 is 603400194821.

It is a self number, because there is not a number n which added to its sum of digits gives 128491004306.

It is not an unprimeable number, because it can be changed into a prime (128491004309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1337231 + ... + 1430093.

It is an arithmetic number, because the mean of its divisors is an integer number (7027483200).

Almost surely, 2^128491004306 is an apocalyptic number.

128491004306 is a deficient number, since it is larger than the sum of its proper divisors (96388458094).

128491004306 is an equidigital number, since it uses as much as digits as its factorization.

128491004306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94903 (or 94889 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 128491004306 in words is "one hundred twenty-eight billion, four hundred ninety-one million, four thousand, three hundred six".