20135635165242 has 24 divisors (see below), whose sum is σ = 43627344056244. Its totient is φ = 6711857691264.

The previous prime is 20135635165241. The next prime is 20135635165253. The reversal of 20135635165242 is 24256153653102.

20135635165242 is a `hidden beast` number, since 2 + 0 + 1 + 3 + 5 + 635 + 1 + 6 + 5 + 2 + 4 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18635012615241 + 1500622550001 = 4316829^2 + 1224999^2 .

It is not an unprimeable number, because it can be changed into a prime (20135635165241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4978768 + ... + 8065940.

Almost surely, 2^{20135635165242} is an apocalyptic number.

20135635165242 is an abundant number, since it is smaller than the sum of its proper divisors (23491708891002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20135635165242 is a wasteful number, since it uses less digits than its factorization.

20135635165242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449534 (or 3449531 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The spelling of 20135635165242 in words is "twenty trillion, one hundred thirty-five billion, six hundred thirty-five million, one hundred sixty-five thousand, two hundred forty-two".