136578355 has 4 divisors (see below), whose sum is σ = 163894032. Its totient is φ = 109262680.

The previous prime is 136578311. The next prime is 136578367. The reversal of 136578355 is 553875631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 553875631 = 19 ⋅29151349.

It is not a de Polignac number, because 136578355 - 2¹⁹ = 136054067 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13657831 + ... + 13657840.

It is an arithmetic number, because the mean of its divisors is an integer number (40973508).

Almost surely, 2^136578355 is an apocalyptic number.

136578355 is a deficient number, since it is larger than the sum of its proper divisors (27315677).

136578355 is an equidigital number, since it uses as much as digits as its factorization.

136578355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27315676.

The product of its digits is 378000, while the sum is 43.

The square root of 136578355 is about 11686.6742489042. The cubic root of 136578355 is about 514.9842644515.

The spelling of 136578355 in words is "one hundred thirty-six million, five hundred seventy-eight thousand, three hundred fifty-five".