128255608355 has 24 divisors (see below), whose sum is σ = 180235983600. Its totient is φ = 87356431680.

The previous prime is 128255608291. The next prime is 128255608373. The reversal of 128255608355 is 553806552821.

It is not a de Polignac number, because 128255608355 - 2⁶ = 128255608291 is a prime.

It is a super-2 number, since 2×128255608355² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1720181 + ... + 1793190.

It is an arithmetic number, because the mean of its divisors is an integer number (7509832650).

Almost surely, 2^128255608355 is an apocalyptic number.

128255608355 is a deficient number, since it is larger than the sum of its proper divisors (51980375245).

128255608355 is a wasteful number, since it uses less digits than its factorization.

128255608355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3513539 (or 3513532 counting only the distinct ones).

The product of its (nonzero) digits is 2880000, while the sum is 50.

The spelling of 128255608355 in words is "one hundred twenty-eight billion, two hundred fifty-five million, six hundred eight thousand, three hundred fifty-five".