65440895071 has 2 divisors, whose sum is σ = 65440895072. Its totient is φ = 65440895070.

The previous prime is 65440895011. The next prime is 65440895101. The reversal of 65440895071 is 17059804456.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65440895071 - 2¹⁹ = 65440370783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65440895011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32720447535 + 32720447536.

It is an arithmetic number, because the mean of its divisors is an integer number (32720447536).

Almost surely, 2^65440895071 is an apocalyptic number.

65440895071 is a deficient number, since it is larger than the sum of its proper divisors (1).

65440895071 is an equidigital number, since it uses as much as digits as its factorization.

65440895071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 49.

The spelling of 65440895071 in words is "sixty-five billion, four hundred forty million, eight hundred ninety-five thousand, seventy-one".