128261193355 has 8 divisors (see below), whose sum is σ = 154018933200. Its totient is φ = 102538620576.

The previous prime is 128261193353. The next prime is 128261193371. The reversal of 128261193355 is 553391162821.

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 128261193355 - 2¹ = 128261193353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128261193353) 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, 8783740 + ... + 8798329.

It is an arithmetic number, because the mean of its divisors is an integer number (19252366650).

Almost surely, 2^128261193355 is an apocalyptic number.

128261193355 is a deficient number, since it is larger than the sum of its proper divisors (25757739845).

128261193355 is a wasteful number, since it uses less digits than its factorization.

128261193355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17583533.

The product of its digits is 388800, while the sum is 46.

The spelling of 128261193355 in words is "one hundred twenty-eight billion, two hundred sixty-one million, one hundred ninety-three thousand, three hundred fifty-five".