128358155 has 4 divisors (see below), whose sum is σ = 154029792. Its totient is φ = 102686520.

The previous prime is 128358151. The next prime is 128358157. The reversal of 128358155 is 551853821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551853821 = 5843 ⋅94447.

It is not a de Polignac number, because 128358155 - 2² = 128358151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128358151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12835811 + ... + 12835820.

It is an arithmetic number, because the mean of its divisors is an integer number (38507448).

Almost surely, 2^128358155 is an apocalyptic number.

128358155 is a deficient number, since it is larger than the sum of its proper divisors (25671637).

128358155 is an equidigital number, since it uses as much as digits as its factorization.

128358155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25671636.

The product of its digits is 48000, while the sum is 38.

The square root of 128358155 is about 11329.5258064934. The cubic root of 128358155 is about 504.4380312086.

The spelling of 128358155 in words is "one hundred twenty-eight million, three hundred fifty-eight thousand, one hundred fifty-five".