65720006663759 has 96 divisors (see below), whose sum is σ = 83361673946880. Its totient is φ = 51450504806400.

The previous prime is 65720006663723. The next prime is 65720006663767. The reversal of 65720006663759 is 95736660002756.

It is a happy number.

It is not a de Polignac number, because 65720006663759 - 2³⁶ = 65651287187023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65720006623759) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6679536362 + ... + 6679546200.

It is an arithmetic number, because the mean of its divisors is an integer number (868350770280).

Almost surely, 2^{65720006663759} is an apocalyptic number.

65720006663759 is a deficient number, since it is larger than the sum of its proper divisors (17641667283121).

65720006663759 is a wasteful number, since it uses less digits than its factorization.

65720006663759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10929 (or 10922 counting only the distinct ones).

The product of its (nonzero) digits is 85730400, while the sum is 62.

The spelling of 65720006663759 in words is "sixty-five trillion, seven hundred twenty billion, six million, six hundred sixty-three thousand, seven hundred fifty-nine".