65063669665 has 8 divisors (see below), whose sum is σ = 78078709800. Its totient is φ = 52049398272.

The previous prime is 65063669641. The next prime is 65063669681. The reversal of 65063669665 is 56696636056.

It is a happy number.

65063669665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 20708361216 + 44355308449 = 143904^2 + 210607^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65063669665 - 2⁵ = 65063669633 is a prime.

It is a super-2 number, since 2×65063669665² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14161 + ... + 361009.

It is an arithmetic number, because the mean of its divisors is an integer number (9759838725).

Almost surely, 2^65063669665 is an apocalyptic number.

It is an amenable number.

65063669665 is a deficient number, since it is larger than the sum of its proper divisors (13015040135).

65063669665 is a wasteful number, since it uses less digits than its factorization.

65063669665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384371.

The product of its (nonzero) digits is 31492800, while the sum is 58.

The spelling of 65063669665 in words is "sixty-five billion, sixty-three million, six hundred sixty-nine thousand, six hundred sixty-five".