65688057672 has 16 divisors (see below), whose sum is σ = 164220144240. Its totient is φ = 21896019216.

The previous prime is 65688057671. The next prime is 65688057683. The reversal of 65688057672 is 27675088656.

It is not an unprimeable number, because it can be changed into a prime (65688057671) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1368501178 + ... + 1368501225.

It is an arithmetic number, because the mean of its divisors is an integer number (10263759015).

Almost surely, 2^65688057672 is an apocalyptic number.

It is an amenable number.

65688057672 is an abundant number, since it is smaller than the sum of its proper divisors (98532086568).

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

65688057672 is a wasteful number, since it uses less digits than its factorization.

65688057672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2737002412 (or 2737002408 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 60.

The spelling of 65688057672 in words is "sixty-five billion, six hundred eighty-eight million, fifty-seven thousand, six hundred seventy-two".