136500505 has 4 divisors (see below), whose sum is σ = 163800612. Its totient is φ = 109200400.

The previous prime is 136500499. The next prime is 136500509. The reversal of 136500505 is 505005631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28901376 + 107599129 = 5376^2 + 10373^2 .

It is not a de Polignac number, because 136500505 - 2¹⁷ = 136369433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136500505.

It is not an unprimeable number, because it can be changed into a prime (136500509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13650046 + ... + 13650055.

It is an arithmetic number, because the mean of its divisors is an integer number (40950153).

Almost surely, 2^136500505 is an apocalyptic number.

It is an amenable number.

136500505 is a deficient number, since it is larger than the sum of its proper divisors (27300107).

136500505 is an equidigital number, since it uses as much as digits as its factorization.

136500505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27300106.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 136500505 is about 11683.3430575328. The cubic root of 136500505 is about 514.8863984199.

The spelling of 136500505 in words is "one hundred thirty-six million, five hundred thousand, five hundred five".