65648684656 has 10 divisors (see below), whose sum is σ = 127194326552. Its totient is φ = 32824342320.

The previous prime is 65648684653. The next prime is 65648684741.

65648684656 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65648684653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2051521380 + ... + 2051521411.

Almost surely, 2^65648684656 is an apocalyptic number.

It is an amenable number.

65648684656 is a deficient number, since it is larger than the sum of its proper divisors (61545641896).

65648684656 is a wasteful number, since it uses less digits than its factorization.

65648684656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103042799 (or 4103042793 counting only the distinct ones).

The product of its digits is 199065600, while the sum is 64.

The spelling of 65648684656 in words is "sixty-five billion, six hundred forty-eight million, six hundred eighty-four thousand, six hundred fifty-six".