65673506784 has 48 divisors (see below), whose sum is σ = 172422749520. Its totient is φ = 21887385600.

The previous prime is 65673506779. The next prime is 65673506797. The reversal of 65673506784 is 48760537656.

It is a tau number, because it is divible by the number of its divisors (48).

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 7 ways as a sum of consecutive naturals, for example, 529632 + ... + 641760.

It is an arithmetic number, because the mean of its divisors is an integer number (3592140615).

Almost surely, 2^65673506784 is an apocalyptic number.

It is an amenable number.

65673506784 is an abundant number, since it is smaller than the sum of its proper divisors (106749242736).

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

65673506784 is a wasteful number, since it uses less digits than its factorization.

65673506784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118243 (or 118235 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 57.

The spelling of 65673506784 in words is "sixty-five billion, six hundred seventy-three million, five hundred six thousand, seven hundred eighty-four".