128230475686 has 8 divisors (see below), whose sum is σ = 203660167320. Its totient is φ = 60343753248.

The previous prime is 128230475663. The next prime is 128230475717. The reversal of 128230475686 is 686574032821.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1885742256 + ... + 1885742323.

It is an arithmetic number, because the mean of its divisors is an integer number (25457520915).

Almost surely, 2^128230475686 is an apocalyptic number.

128230475686 is a deficient number, since it is larger than the sum of its proper divisors (75429691634).

128230475686 is a wasteful number, since it uses less digits than its factorization.

128230475686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3771484598.

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 128230475686 in words is "one hundred twenty-eight billion, two hundred thirty million, four hundred seventy-five thousand, six hundred eighty-six".