128670873238 has 8 divisors (see below), whose sum is σ = 197112827232. Its totient is φ = 62966597496.

The previous prime is 128670873187. The next prime is 128670873271. The reversal of 128670873238 is 832378076821.

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, 684419445 + ... + 684419632.

It is an arithmetic number, because the mean of its divisors is an integer number (24639103404).

Almost surely, 2^128670873238 is an apocalyptic number.

128670873238 is a deficient number, since it is larger than the sum of its proper divisors (68441953994).

128670873238 is a wasteful number, since it uses less digits than its factorization.

128670873238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368839126.

The product of its (nonzero) digits is 5419008, while the sum is 55.

The spelling of 128670873238 in words is "one hundred twenty-eight billion, six hundred seventy million, eight hundred seventy-three thousand, two hundred thirty-eight".