136637634586 has 4 divisors (see below), whose sum is σ = 204956451882. Its totient is φ = 68318817292.

The previous prime is 136637634557. The next prime is 136637634599. The reversal of 136637634586 is 685436736631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 104500260225 + 32137374361 = 323265^2 + 179269^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 136637634586.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34159408645 + ... + 34159408648.

Almost surely, 2^136637634586 is an apocalyptic number.

136637634586 is a deficient number, since it is larger than the sum of its proper divisors (68318817296).

136637634586 is an equidigital number, since it uses as much as digits as its factorization.

136637634586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68318817295.

The product of its digits is 39191040, while the sum is 58.

The spelling of 136637634586 in words is "one hundred thirty-six billion, six hundred thirty-seven million, six hundred thirty-four thousand, five hundred eighty-six".