128003173557117 has 32 divisors (see below), whose sum is σ = 175032624729600. Its totient is φ = 83169831521280.

The previous prime is 128003173557089. The next prime is 128003173557157. The reversal of 128003173557117 is 711755371300821.

It is not a de Polignac number, because 128003173557117 - 2²⁷ = 128003039339389 is a prime.

It is a super-2 number, since 2×128003173557117² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128003173557117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128003173557157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1029324259 + ... + 1029448607.

It is an arithmetic number, because the mean of its divisors is an integer number (5469769522800).

Almost surely, 2^{128003173557117} is an apocalyptic number.

It is an amenable number.

128003173557117 is a deficient number, since it is larger than the sum of its proper divisors (47029451172483).

128003173557117 is a wasteful number, since it uses less digits than its factorization.

128003173557117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154933.

The product of its (nonzero) digits is 1234800, while the sum is 51.

The spelling of 128003173557117 in words is "one hundred twenty-eight trillion, three billion, one hundred seventy-three million, five hundred fifty-seven thousand, one hundred seventeen".