164426764729 has 2 divisors, whose sum is σ = 164426764730. Its totient is φ = 164426764728.

The previous prime is 164426764717. The next prime is 164426764781. The reversal of 164426764729 is 927467624461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106111759504 + 58315005225 = 325748^2 + 241485^2 .

It is a cyclic number.

It is not a de Polignac number, because 164426764729 - 2¹¹ = 164426762681 is a prime.

It is a super-3 number, since 3×164426764729³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (164426764529) 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, 82213382364 + 82213382365.

It is an arithmetic number, because the mean of its divisors is an integer number (82213382365).

Almost surely, 2^164426764729 is an apocalyptic number.

It is an amenable number.

164426764729 is a deficient number, since it is larger than the sum of its proper divisors (1).

164426764729 is an equidigital number, since it uses as much as digits as its factorization.

164426764729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24385536, while the sum is 58.

The spelling of 164426764729 in words is "one hundred sixty-four billion, four hundred twenty-six million, seven hundred sixty-four thousand, seven hundred twenty-nine".