20164522127 has 2 divisors, whose sum is σ = 20164522128. Its totient is φ = 20164522126.

The previous prime is 20164522117. The next prime is 20164522159. The reversal of 20164522127 is 72122546102.

It is an a-pointer prime, because the next prime (20164522159) can be obtained adding 20164522127 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20164522127 is a prime.

It is a super-2 number, since 2×20164522127² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20164522093 and 20164522102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20164522117) by changing a digit.

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 as a sum of consecutive naturals, namely, 10082261063 + 10082261064.

It is an arithmetic number, because the mean of its divisors is an integer number (10082261064).

Almost surely, 2^20164522127 is an apocalyptic number.

20164522127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20164522127 is an equidigital number, since it uses as much as digits as its factorization.

20164522127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 20164522127 in words is "twenty billion, one hundred sixty-four million, five hundred twenty-two thousand, one hundred twenty-seven".