265335166493 has 2 divisors, whose sum is σ = 265335166494. Its totient is φ = 265335166492.

The previous prime is 265335166469. The next prime is 265335166511. The reversal of 265335166493 is 394661533562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224271386329 + 41063780164 = 473573^2 + 202642^2 .

It is a cyclic number.

It is not a de Polignac number, because 265335166493 - 2²⁴ = 265318389277 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265335166463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132667583246 + 132667583247.

It is an arithmetic number, because the mean of its divisors is an integer number (132667583247).

Almost surely, 2^265335166493 is an apocalyptic number.

It is an amenable number.

265335166493 is a deficient number, since it is larger than the sum of its proper divisors (1).

265335166493 is an equidigital number, since it uses as much as digits as its factorization.

265335166493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10497600, while the sum is 53.

The spelling of 265335166493 in words is "two hundred sixty-five billion, three hundred thirty-five million, one hundred sixty-six thousand, four hundred ninety-three".