65511222328 has 8 divisors (see below), whose sum is σ = 122833541880. Its totient is φ = 32755611160.

The previous prime is 65511222313. The next prime is 65511222367. The reversal of 65511222328 is 82322211556.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4094451388 + ... + 4094451403.

It is an arithmetic number, because the mean of its divisors is an integer number (15354192735).

Almost surely, 2^65511222328 is an apocalyptic number.

It is an amenable number.

65511222328 is a deficient number, since it is larger than the sum of its proper divisors (57322319552).

65511222328 is a wasteful number, since it uses less digits than its factorization.

65511222328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8188902797 (or 8188902793 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The spelling of 65511222328 in words is "sixty-five billion, five hundred eleven million, two hundred twenty-two thousand, three hundred twenty-eight".