65651561009696 has 48 divisors (see below), whose sum is σ = 131122789035840. Its totient is φ = 32350893845760.

The previous prime is 65651561009693. The next prime is 65651561009761. The reversal of 65651561009696 is 69690016515656.

65651561009696 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (65651561009693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257330 + ... + 11461646.

It is an arithmetic number, because the mean of its divisors is an integer number (2731724771580).

Almost surely, 2^{65651561009696} is an apocalyptic number.

It is an amenable number.

65651561009696 is a deficient number, since it is larger than the sum of its proper divisors (65471228026144).

65651561009696 is a wasteful number, since it uses less digits than its factorization.

65651561009696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11206977 (or 11206969 counting only the distinct ones).

The product of its (nonzero) digits is 78732000, while the sum is 65.

The spelling of 65651561009696 in words is "sixty-five trillion, six hundred fifty-one billion, five hundred sixty-one million, nine thousand, six hundred ninety-six".