136658313168658 has 4 divisors (see below), whose sum is σ = 204987469752990. Its totient is φ = 68329156584328.

The previous prime is 136658313168613. The next prime is 136658313168673. The reversal of 136658313168658 is 856861313856631.

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., 128622749392809 + 8035563775849 = 11341197^2 + 2834707^2 .

It is an unprimeable number.

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, 34164578292163 + ... + 34164578292166.

Almost surely, 2^{136658313168658} is an apocalyptic number.

136658313168658 is a deficient number, since it is larger than the sum of its proper divisors (68329156584332).

136658313168658 is an equidigital number, since it uses as much as digits as its factorization.

136658313168658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68329156584331.

The product of its digits is 447897600, while the sum is 70.

The spelling of 136658313168658 in words is "one hundred thirty-six trillion, six hundred fifty-eight billion, three hundred thirteen million, one hundred sixty-eight thousand, six hundred fifty-eight".