136564604009 has 2 divisors, whose sum is σ = 136564604010. Its totient is φ = 136564604008.

The previous prime is 136564603993. The next prime is 136564604023. The reversal of 136564604009 is 900406465631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96117360784 + 40447243225 = 310028^2 + 201115^2 .

It is a cyclic number.

It is not a de Polignac number, because 136564604009 - 2⁴ = 136564603993 is a prime.

It is not a weakly prime, because it can be changed into another prime (136564604069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68282302004 + 68282302005.

It is an arithmetic number, because the mean of its divisors is an integer number (68282302005).

Almost surely, 2^136564604009 is an apocalyptic number.

It is an amenable number.

136564604009 is a deficient number, since it is larger than the sum of its proper divisors (1).

136564604009 is an equidigital number, since it uses as much as digits as its factorization.

136564604009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 136564604009 in words is "one hundred thirty-six billion, five hundred sixty-four million, six hundred four thousand, nine".