265140436533653 has 2 divisors, whose sum is σ = 265140436533654. Its totient is φ = 265140436533652.

The previous prime is 265140436533649. The next prime is 265140436533701. The reversal of 265140436533653 is 356335634041562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253206956100484 + 11933480433169 = 15912478^2 + 3454487^2 .

It is a cyclic number.

It is not a de Polignac number, because 265140436533653 - 2² = 265140436533649 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265140436533613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132570218266826 + 132570218266827.

It is an arithmetic number, because the mean of its divisors is an integer number (132570218266827).

Almost surely, 2^{265140436533653} is an apocalyptic number.

It is an amenable number.

265140436533653 is a deficient number, since it is larger than the sum of its proper divisors (1).

265140436533653 is an equidigital number, since it uses as much as digits as its factorization.

265140436533653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984000, while the sum is 56.

The spelling of 265140436533653 in words is "two hundred sixty-five trillion, one hundred forty billion, four hundred thirty-six million, five hundred thirty-three thousand, six hundred fifty-three".