65134666663 has 4 divisors (see below), whose sum is σ = 71056000008. Its totient is φ = 59213333320.

The previous prime is 65134666607. The next prime is 65134666679. The reversal of 65134666663 is 36666643156.

65134666663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65134666663 - 2²⁹ = 64597795751 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65134666663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65134666693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2960666656 + ... + 2960666677.

It is an arithmetic number, because the mean of its divisors is an integer number (17764000002).

Almost surely, 2^65134666663 is an apocalyptic number.

65134666663 is a deficient number, since it is larger than the sum of its proper divisors (5921333345).

65134666663 is a wasteful number, since it uses less digits than its factorization.

65134666663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5921333344.

The product of its digits is 8398080, while the sum is 52.

The spelling of 65134666663 in words is "sixty-five billion, one hundred thirty-four million, six hundred sixty-six thousand, six hundred sixty-three".