20135105133136 has 80 divisors (see below), whose sum is σ = 47356436422656. Its totient is φ = 8096102258688.

The previous prime is 20135105133107. The next prime is 20135105133211. The reversal of 20135105133136 is 63133150153102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16076496 + ... + 17283631.

Almost surely, 2^{20135105133136} is an apocalyptic number.

It is an amenable number.

20135105133136 is an abundant number, since it is smaller than the sum of its proper divisors (27221331289520).

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

20135105133136 is a wasteful number, since it uses less digits than its factorization.

20135105133136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33360476 (or 33360470 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 34.

Adding to 20135105133136 its reverse (63133150153102), we get a palindrome (83268255286238).

The spelling of 20135105133136 in words is "twenty trillion, one hundred thirty-five billion, one hundred five million, one hundred thirty-three thousand, one hundred thirty-six".