164327854566061 has 2 divisors, whose sum is σ = 164327854566062. Its totient is φ = 164327854566060.

The previous prime is 164327854565951. The next prime is 164327854566077. The reversal of 164327854566061 is 160665458723461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143311305412900 + 21016549153161 = 11971270^2 + 4584381^2 .

It is a cyclic number.

It is not a de Polignac number, because 164327854566061 - 2²⁷ = 164327720348333 is a prime.

It is a super-2 number, since 2×164327854566061² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164327854565984 and 164327854566002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164327854566091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82163927283030 + 82163927283031.

It is an arithmetic number, because the mean of its divisors is an integer number (82163927283031).

Almost surely, 2^{164327854566061} is an apocalyptic number.

It is an amenable number.

164327854566061 is a deficient number, since it is larger than the sum of its proper divisors (1).

164327854566061 is an equidigital number, since it uses as much as digits as its factorization.

164327854566061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174182400, while the sum is 64.

The spelling of 164327854566061 in words is "one hundred sixty-four trillion, three hundred twenty-seven billion, eight hundred fifty-four million, five hundred sixty-six thousand, sixty-one".