65820455271 has 6 divisors (see below), whose sum is σ = 95073990960. Its totient is φ = 43880303508.

The previous prime is 65820455263. The next prime is 65820455303. The reversal of 65820455271 is 17255402856.

65820455271 is a `hidden beast` number, since 6 + 5 + 8 + 20 + 4 + 552 + 71 = 666.

It is not a de Polignac number, because 65820455271 - 2³ = 65820455263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65820455231) 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, 3656691951 + ... + 3656691968.

It is an arithmetic number, because the mean of its divisors is an integer number (15845665160).

Almost surely, 2^65820455271 is an apocalyptic number.

65820455271 is a deficient number, since it is larger than the sum of its proper divisors (29253535689).

65820455271 is a wasteful number, since it uses less digits than its factorization.

65820455271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7313383925 (or 7313383922 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 45.

The spelling of 65820455271 in words is "sixty-five billion, eight hundred twenty million, four hundred fifty-five thousand, two hundred seventy-one".