264589464509 has 2 divisors, whose sum is σ = 264589464510. Its totient is φ = 264589464508.

The previous prime is 264589464487. The next prime is 264589464539. The reversal of 264589464509 is 905464985462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174538457284 + 90051007225 = 417778^2 + 300085^2 .

It is a cyclic number.

It is not a de Polignac number, because 264589464509 - 2⁸ = 264589464253 is a prime.

It is a super-2 number, since 2×264589464509² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264589464539) 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, 132294732254 + 132294732255.

It is an arithmetic number, because the mean of its divisors is an integer number (132294732255).

Almost surely, 2^264589464509 is an apocalyptic number.

It is an amenable number.

264589464509 is a deficient number, since it is larger than the sum of its proper divisors (1).

264589464509 is an equidigital number, since it uses as much as digits as its factorization.

264589464509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74649600, while the sum is 62.

The spelling of 264589464509 in words is "two hundred sixty-four billion, five hundred eighty-nine million, four hundred sixty-four thousand, five hundred nine".