264504455164549 has 2 divisors, whose sum is σ = 264504455164550. Its totient is φ = 264504455164548.

The previous prime is 264504455164507. The next prime is 264504455164553. The reversal of 264504455164549 is 945461554405462.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205235135560900 + 59269319603649 = 14326030^2 + 7698657^2 .

It is a cyclic number.

It is not a de Polignac number, because 264504455164549 - 2⁴¹ = 262305431908997 is a prime.

It is a super-3 number, since 3×264504455164549³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264504455164349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132252227582274 + 132252227582275.

It is an arithmetic number, because the mean of its divisors is an integer number (132252227582275).

Almost surely, 2^{264504455164549} is an apocalyptic number.

It is an amenable number.

264504455164549 is a deficient number, since it is larger than the sum of its proper divisors (1).

264504455164549 is an equidigital number, since it uses as much as digits as its factorization.

264504455164549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720000, while the sum is 64.

The spelling of 264504455164549 in words is "two hundred sixty-four trillion, five hundred four billion, four hundred fifty-five million, one hundred sixty-four thousand, five hundred forty-nine".