135636125426 has 4 divisors (see below), whose sum is σ = 203454188142. Its totient is φ = 67818062712.

The previous prime is 135636125351. The next prime is 135636125431. The reversal of 135636125426 is 624521636531.

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., 102403200025 + 33232925401 = 320005^2 + 182299^2 .

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, 33909031355 + ... + 33909031358.

Almost surely, 2^135636125426 is an apocalyptic number.

135636125426 is a deficient number, since it is larger than the sum of its proper divisors (67818062716).

135636125426 is an equidigital number, since it uses as much as digits as its factorization.

135636125426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67818062715.

The product of its digits is 777600, while the sum is 44.

The spelling of 135636125426 in words is "one hundred thirty-five billion, six hundred thirty-six million, one hundred twenty-five thousand, four hundred twenty-six".