136566445126 has 4 divisors (see below), whose sum is σ = 204849667692. Its totient is φ = 68283222562.

The previous prime is 136566445123. The next prime is 136566445159. The reversal of 136566445126 is 621544665631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 621544665631 = 41 ⋅15159625991.

It is a Smith number, since the sum of its digits (49) 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 136566445126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136566445123) 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, 34141611280 + ... + 34141611283.

It is an arithmetic number, because the mean of its divisors is an integer number (51212416923).

Almost surely, 2^136566445126 is an apocalyptic number.

136566445126 is a deficient number, since it is larger than the sum of its proper divisors (68283222566).

136566445126 is an equidigital number, since it uses as much as digits as its factorization.

136566445126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68283222565.

The product of its digits is 3110400, while the sum is 49.

The spelling of 136566445126 in words is "one hundred thirty-six billion, five hundred sixty-six million, four hundred forty-five thousand, one hundred twenty-six".