135636125427 has 40 divisors (see below), whose sum is σ = 221246519472. Its totient is φ = 82125662400.

The previous prime is 135636125351. The next prime is 135636125431. The reversal of 135636125427 is 724521636531.

135636125427 is a `hidden beast` number, since 1 + 3 + 5 + 6 + 3 + 612 + 5 + 4 + 27 = 666.

It is not a de Polignac number, because 135636125427 - 2⁷ = 135636125299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135636125437) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 873613 + ... + 1017089.

Almost surely, 2^135636125427 is an apocalyptic number.

135636125427 is a deficient number, since it is larger than the sum of its proper divisors (85610394045).

135636125427 is a wasteful number, since it uses less digits than its factorization.

135636125427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144561 (or 144552 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The spelling of 135636125427 in words is "one hundred thirty-five billion, six hundred thirty-six million, one hundred twenty-five thousand, four hundred twenty-seven".