20135522020051 has 16 divisors (see below), whose sum is σ = 20976262070400. Its totient is φ = 19305003655168.

The previous prime is 20135522020027. The next prime is 20135522020069. The reversal of 20135522020051 is 15002022553102.

It is a cyclic number.

It is not a de Polignac number, because 20135522020051 - 2⁹ = 20135522019539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20135522020091) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 1668286 + ... + 6561571.

It is an arithmetic number, because the mean of its divisors is an integer number (1311016379400).

Almost surely, 2^{20135522020051} is an apocalyptic number.

20135522020051 is a deficient number, since it is larger than the sum of its proper divisors (840740050349).

20135522020051 is a wasteful number, since it uses less digits than its factorization.

20135522020051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8230478.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 20135522020051 its reverse (15002022553102), we get a palindrome (35137544573153).

The spelling of 20135522020051 in words is "twenty trillion, one hundred thirty-five billion, five hundred twenty-two million, twenty thousand, fifty-one".