65648600684656 has 40 divisors (see below), whose sum is σ = 138764362512384. Its totient is φ = 29838747687360.

The previous prime is 65648600684627. The next prime is 65648600684659.

65648600684656 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 (65648600684659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6077046 + ... + 12970261.

Almost surely, 2^{65648600684656} is an apocalyptic number.

It is an amenable number.

65648600684656 is an abundant number, since it is smaller than the sum of its proper divisors (73115761827728).

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

65648600684656 is a wasteful number, since it uses less digits than its factorization.

65648600684656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19066909 (or 19066903 counting only the distinct ones).

The product of its (nonzero) digits is 1194393600, while the sum is 70.

The spelling of 65648600684656 in words is "sixty-five trillion, six hundred forty-eight billion, six hundred million, six hundred eighty-four thousand, six hundred fifty-six".