136661211 has 6 divisors (see below), whose sum is σ = 197399540. Its totient is φ = 91107468.

The previous prime is 136661209. The next prime is 136661221. The reversal of 136661211 is 112166631.

It is not a de Polignac number, because 136661211 - 2¹ = 136661209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136661221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7592281 + ... + 7592298.

Almost surely, 2^136661211 is an apocalyptic number.

136661211 is a deficient number, since it is larger than the sum of its proper divisors (60738329).

136661211 is a wasteful number, since it uses less digits than its factorization.

136661211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15184585 (or 15184582 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 136661211 is about 11690.2186036019. The cubic root of 136661211 is about 515.0883827323.

The spelling of 136661211 in words is "one hundred thirty-six million, six hundred sixty-one thousand, two hundred eleven".