65703581664 has 96 divisors (see below), whose sum is σ = 199143012096. Its totient is φ = 18578903040.

The previous prime is 65703581651. The next prime is 65703581681. The reversal of 65703581664 is 46618530756.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 438802 + ... + 569169.

It is an arithmetic number, because the mean of its divisors is an integer number (2074406376).

Almost surely, 2^65703581664 is an apocalyptic number.

It is an amenable number.

65703581664 is an abundant number, since it is smaller than the sum of its proper divisors (133439430432).

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

65703581664 is a wasteful number, since it uses less digits than its factorization.

65703581664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008088 (or 1008080 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 51.

The spelling of 65703581664 in words is "sixty-five billion, seven hundred three million, five hundred eighty-one thousand, six hundred sixty-four".