65655855656 has 32 divisors (see below), whose sum is σ = 123357867840. Its totient is φ = 32760486528.

The previous prime is 65655855647. The next prime is 65655855721.

65655855656 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15171365 + ... + 15175691.

It is an arithmetic number, because the mean of its divisors is an integer number (3854933370).

Almost surely, 2^65655855656 is an apocalyptic number.

It is an amenable number.

65655855656 is a deficient number, since it is larger than the sum of its proper divisors (57702012184).

65655855656 is a wasteful number, since it uses less digits than its factorization.

65655855656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7793 (or 7789 counting only the distinct ones).

The product of its digits is 162000000, while the sum is 62.

The spelling of 65655855656 in words is "sixty-five billion, six hundred fifty-five million, eight hundred fifty-five thousand, six hundred fifty-six".