20201043135 has 64 divisors (see below), whose sum is σ = 42120594432. Its totient is φ = 8022951936.

The previous prime is 20201043131. The next prime is 20201043173. The reversal of 20201043135 is 53134010202.

It is not a de Polignac number, because 20201043135 - 2² = 20201043131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201043131) 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 63 ways as a sum of consecutive naturals, for example, 412069 + ... + 458478.

It is an arithmetic number, because the mean of its divisors is an integer number (658134288).

Almost surely, 2^20201043135 is an apocalyptic number.

20201043135 is an abundant number, since it is smaller than the sum of its proper divisors (21919551297).

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

20201043135 is a wasteful number, since it uses less digits than its factorization.

20201043135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870592.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 20201043135 its reverse (53134010202), we get a palindrome (73335053337).

The spelling of 20201043135 in words is "twenty billion, two hundred one million, forty-three thousand, one hundred thirty-five".