65368528668 has 36 divisors (see below), whose sum is σ = 165366423040. Its totient is φ = 21772457856.

The previous prime is 65368528661. The next prime is 65368528697. The reversal of 65368528668 is 86682586356.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65368528661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 663805 + ... + 755892.

Almost surely, 2^65368528668 is an apocalyptic number.

It is an amenable number.

65368528668 is an abundant number, since it is smaller than the sum of its proper divisors (99997894372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65368528668 is a wasteful number, since it uses less digits than its factorization.

65368528668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420986 (or 1420981 counting only the distinct ones).

The product of its digits is 99532800, while the sum is 63.

The spelling of 65368528668 in words is "sixty-five billion, three hundred sixty-eight million, five hundred twenty-eight thousand, six hundred sixty-eight".