65244555564 has 12 divisors (see below), whose sum is σ = 152237296344. Its totient is φ = 21748185184.

The previous prime is 65244555553. The next prime is 65244555583. The reversal of 65244555564 is 46555544256.

It is a tau number, because it is divible by the number of its divisors (12).

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 in 3 ways as a sum of consecutive naturals, for example, 2718523137 + ... + 2718523160.

It is an arithmetic number, because the mean of its divisors is an integer number (12686441362).

Almost surely, 2^65244555564 is an apocalyptic number.

It is an amenable number.

65244555564 is an abundant number, since it is smaller than the sum of its proper divisors (86992740780).

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

65244555564 is a wasteful number, since it uses less digits than its factorization.

65244555564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5437046304 (or 5437046302 counting only the distinct ones).

The product of its digits is 14400000, while the sum is 51.

The spelling of 65244555564 in words is "sixty-five billion, two hundred forty-four million, five hundred fifty-five thousand, five hundred sixty-four".