136115999 has 2 divisors, whose sum is σ = 136116000. Its totient is φ = 136115998.

The previous prime is 136115989. The next prime is 136116011. The reversal of 136115999 is 999511631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136115999 - 2⁸ = 136115743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136115989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68057999 + 68058000.

It is an arithmetic number, because the mean of its divisors is an integer number (68058000).

Almost surely, 2^136115999 is an apocalyptic number.

136115999 is a deficient number, since it is larger than the sum of its proper divisors (1).

136115999 is an equidigital number, since it uses as much as digits as its factorization.

136115999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65610, while the sum is 44.

The square root of 136115999 is about 11666.8761457384. The cubic root of 136115999 is about 514.4024854517.

The spelling of 136115999 in words is "one hundred thirty-six million, one hundred fifteen thousand, nine hundred ninety-nine".