164426764717 has 2 divisors, whose sum is σ = 164426764718. Its totient is φ = 164426764716.

The previous prime is 164426764699. The next prime is 164426764729. The reversal of 164426764717 is 717467624461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133556626116 + 30870138601 = 365454^2 + 175699^2 .

It is a cyclic number.

It is not a de Polignac number, because 164426764717 - 2⁷ = 164426764589 is a prime.

It is a super-3 number, since 3×164426764717³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164426714717) 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, 82213382358 + 82213382359.

It is an arithmetic number, because the mean of its divisors is an integer number (82213382359).

Almost surely, 2^164426764717 is an apocalyptic number.

It is an amenable number.

164426764717 is a deficient number, since it is larger than the sum of its proper divisors (1).

164426764717 is an equidigital number, since it uses as much as digits as its factorization.

164426764717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9483264, while the sum is 55.

The spelling of 164426764717 in words is "one hundred sixty-four billion, four hundred twenty-six million, seven hundred sixty-four thousand, seven hundred seventeen".