264461860639309 has 2 divisors, whose sum is σ = 264461860639310. Its totient is φ = 264461860639308.

The previous prime is 264461860639271. The next prime is 264461860639351. The reversal of 264461860639309 is 903936068164462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165822202576809 + 98639658062500 = 12877197^2 + 9931750^2 .

It is a cyclic number.

It is not a de Polignac number, because 264461860639309 - 2⁹ = 264461860638797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264461860639709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132230930319654 + 132230930319655.

It is an arithmetic number, because the mean of its divisors is an integer number (132230930319655).

Almost surely, 2^{264461860639309} is an apocalyptic number.

It is an amenable number.

264461860639309 is a deficient number, since it is larger than the sum of its proper divisors (1).

264461860639309 is an equidigital number, since it uses as much as digits as its factorization.

264461860639309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241864704, while the sum is 67.

The spelling of 264461860639309 in words is "two hundred sixty-four trillion, four hundred sixty-one billion, eight hundred sixty million, six hundred thirty-nine thousand, three hundred nine".