128003173557238 has 16 divisors (see below), whose sum is σ = 219649354341120. Its totient is φ = 54804667320936.

The previous prime is 128003173557221. The next prime is 128003173557241. The reversal of 128003173557238 is 832755371300821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4486287906 + ... + 4486316437.

It is an arithmetic number, because the mean of its divisors is an integer number (13728084646320).

Almost surely, 2^{128003173557238} is an apocalyptic number.

128003173557238 is a deficient number, since it is larger than the sum of its proper divisors (91646180783882).

128003173557238 is a wasteful number, since it uses less digits than its factorization.

128003173557238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8972605371.

The product of its (nonzero) digits is 8467200, while the sum is 55.

The spelling of 128003173557238 in words is "one hundred twenty-eight trillion, three billion, one hundred seventy-three million, five hundred fifty-seven thousand, two hundred thirty-eight".