136742423899 has 2 divisors, whose sum is σ = 136742423900. Its totient is φ = 136742423898.

The previous prime is 136742423837. The next prime is 136742423903. The reversal of 136742423899 is 998324247631.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136742423899 is a prime.

It is not a weakly prime, because it can be changed into another prime (136742423999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68371211949 + 68371211950.

It is an arithmetic number, because the mean of its divisors is an integer number (68371211950).

Almost surely, 2^136742423899 is an apocalyptic number.

136742423899 is a deficient number, since it is larger than the sum of its proper divisors (1).

136742423899 is an equidigital number, since it uses as much as digits as its factorization.

136742423899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15676416, while the sum is 58.

The spelling of 136742423899 in words is "one hundred thirty-six billion, seven hundred forty-two million, four hundred twenty-three thousand, eight hundred ninety-nine".