136663139 has 2 divisors, whose sum is σ = 136663140. Its totient is φ = 136663138.

The previous prime is 136663133. The next prime is 136663141. The reversal of 136663139 is 931366631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136663139 - 2¹² = 136659043 is a prime.

It is a super-2 number, since 2×136663139² = 37353627122666642, which contains 22 as substring.

Together with 136663141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136663133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68331569 + 68331570.

It is an arithmetic number, because the mean of its divisors is an integer number (68331570).

Almost surely, 2^136663139 is an apocalyptic number.

136663139 is a deficient number, since it is larger than the sum of its proper divisors (1).

136663139 is an equidigital number, since it uses as much as digits as its factorization.

136663139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 38.

The square root of 136663139 is about 11690.3010654132. The cubic root of 136663139 is about 515.0908049893.

The spelling of 136663139 in words is "one hundred thirty-six million, six hundred sixty-three thousand, one hundred thirty-nine".