65805250271 has 6 divisors (see below), whose sum is σ = 66079492416. Its totient is φ = 65532141600.

The previous prime is 65805250267. The next prime is 65805250289. The reversal of 65805250271 is 17205250856.

It is not a de Polignac number, because 65805250271 - 2² = 65805250267 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65805250201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 508415 + ... + 624576.

It is an arithmetic number, because the mean of its divisors is an integer number (11013248736).

Almost surely, 2^65805250271 is an apocalyptic number.

65805250271 is a deficient number, since it is larger than the sum of its proper divisors (274242145).

65805250271 is an equidigital number, since it uses as much as digits as its factorization.

65805250271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133473 (or 1133232 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 41.

The spelling of 65805250271 in words is "sixty-five billion, eight hundred five million, two hundred fifty thousand, two hundred seventy-one".