128613155 has 8 divisors (see below), whose sum is σ = 168366384. Its totient is φ = 93536800.

The previous prime is 128613137. The next prime is 128613157. The reversal of 128613155 is 551316821.

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

It is not a de Polignac number, because 128613155 - 2⁶ = 128613091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128613157) 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, 1169156 + ... + 1169265.

It is an arithmetic number, because the mean of its divisors is an integer number (21045798).

Almost surely, 2^128613155 is an apocalyptic number.

128613155 is a deficient number, since it is larger than the sum of its proper divisors (39753229).

128613155 is a wasteful number, since it uses less digits than its factorization.

128613155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2338437.

The product of its digits is 7200, while the sum is 32.

The square root of 128613155 is about 11340.7740035678. The cubic root of 128613155 is about 504.7718539427.

Adding to 128613155 its reverse (551316821), we get a palindrome (679929976).

It can be divided in two parts, 1286 and 13155, that added together give a palindrome (14441).

The spelling of 128613155 in words is "one hundred twenty-eight million, six hundred thirteen thousand, one hundred fifty-five".