265640660364679 has 2 divisors, whose sum is σ = 265640660364680. Its totient is φ = 265640660364678.

The previous prime is 265640660364649. The next prime is 265640660364707. The reversal of 265640660364679 is 976463066046562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265640660364679 - 2³¹ = 265638512881031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265640660364649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132820330182339 + 132820330182340.

It is an arithmetic number, because the mean of its divisors is an integer number (132820330182340).

Almost surely, 2^{265640660364679} is an apocalyptic number.

265640660364679 is a deficient number, since it is larger than the sum of its proper divisors (1).

265640660364679 is an equidigital number, since it uses as much as digits as its factorization.

265640660364679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1410877440, while the sum is 70.

The spelling of 265640660364679 in words is "two hundred sixty-five trillion, six hundred forty billion, six hundred sixty million, three hundred sixty-four thousand, six hundred seventy-nine".