265962536985647 has 2 divisors, whose sum is σ = 265962536985648. Its totient is φ = 265962536985646.

The previous prime is 265962536985569. The next prime is 265962536985701. The reversal of 265962536985647 is 746589635269562.

265962536985647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265962536985647 - 2¹⁸ = 265962536723503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265962533985647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132981268492823 + 132981268492824.

It is an arithmetic number, because the mean of its divisors is an integer number (132981268492824).

Almost surely, 2^{265962536985647} is an apocalyptic number.

265962536985647 is a deficient number, since it is larger than the sum of its proper divisors (1).

265962536985647 is an equidigital number, since it uses as much as digits as its factorization.

265962536985647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35271936000, while the sum is 83.

The spelling of 265962536985647 in words is "two hundred sixty-five trillion, nine hundred sixty-two billion, five hundred thirty-six million, nine hundred eighty-five thousand, six hundred forty-seven".