20164522135 has 4 divisors (see below), whose sum is σ = 24197426568. Its totient is φ = 16131617704.

The previous prime is 20164522127. The next prime is 20164522159. The reversal of 20164522135 is 53122546102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53122546102 = 2 ⋅26561273051.

It is a cyclic number.

It is not a de Polignac number, because 20164522135 - 2³ = 20164522127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20164522097 and 20164522106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2016452209 + ... + 2016452218.

It is an arithmetic number, because the mean of its divisors is an integer number (6049356642).

Almost surely, 2^20164522135 is an apocalyptic number.

20164522135 is a deficient number, since it is larger than the sum of its proper divisors (4032904433).

20164522135 is an equidigital number, since it uses as much as digits as its factorization.

20164522135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4032904432.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 20164522135 in words is "twenty billion, one hundred sixty-four million, five hundred twenty-two thousand, one hundred thirty-five".