128630889237 has 8 divisors (see below), whose sum is σ = 171648783936. Its totient is φ = 85683460352.

The previous prime is 128630889229. The next prime is 128630889241. The reversal of 128630889237 is 732988036821.

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

It is a cyclic number.

It is not a de Polignac number, because 128630889237 - 2³ = 128630889229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128630889227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17612193 + ... + 17619494.

It is an arithmetic number, because the mean of its divisors is an integer number (21456097992).

Almost surely, 2^128630889237 is an apocalyptic number.

It is an amenable number.

128630889237 is a deficient number, since it is larger than the sum of its proper divisors (43017894699).

128630889237 is a wasteful number, since it uses less digits than its factorization.

128630889237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35232907.

The product of its (nonzero) digits is 6967296, while the sum is 57.

The spelling of 128630889237 in words is "one hundred twenty-eight billion, six hundred thirty million, eight hundred eighty-nine thousand, two hundred thirty-seven".