136564130609 has 2 divisors, whose sum is σ = 136564130610. Its totient is φ = 136564130608.

The previous prime is 136564130587. The next prime is 136564130621. The reversal of 136564130609 is 906031465631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135821731600 + 742399009 = 368540^2 + 27247^2 .

It is an emirp because it is prime and its reverse (906031465631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136564130609 - 2¹² = 136564126513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136564130609.

It is not a weakly prime, because it can be changed into another prime (136564130809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68282065304 + 68282065305.

It is an arithmetic number, because the mean of its divisors is an integer number (68282065305).

Almost surely, 2^136564130609 is an apocalyptic number.

It is an amenable number.

136564130609 is a deficient number, since it is larger than the sum of its proper divisors (1).

136564130609 is an equidigital number, since it uses as much as digits as its factorization.

136564130609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 44.

The spelling of 136564130609 in words is "one hundred thirty-six billion, five hundred sixty-four million, one hundred thirty thousand, six hundred nine".