128630889238 has 8 divisors (see below), whose sum is σ = 203101404120. Its totient is φ = 60930421200.

The previous prime is 128630889229. The next prime is 128630889241. The reversal of 128630889238 is 832988036821.

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, 1692511663 + ... + 1692511738.

It is an arithmetic number, because the mean of its divisors is an integer number (25387675515).

Almost surely, 2^128630889238 is an apocalyptic number.

128630889238 is a deficient number, since it is larger than the sum of its proper divisors (74470514882).

128630889238 is a wasteful number, since it uses less digits than its factorization.

128630889238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3385023422.

The product of its (nonzero) digits is 7962624, while the sum is 58.

The spelling of 128630889238 in words is "one hundred twenty-eight billion, six hundred thirty million, eight hundred eighty-nine thousand, two hundred thirty-eight".