65883844560 has 40 divisors (see below), whose sum is σ = 204239918880. Its totient is φ = 17569025152.

The previous prime is 65883844549. The next prime is 65883844577. The reversal of 65883844560 is 6544838856.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 65883844560.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137257770 + ... + 137258249.

It is an arithmetic number, because the mean of its divisors is an integer number (5105997972).

Almost surely, 2^65883844560 is an apocalyptic number.

65883844560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65883844560 is an abundant number, since it is smaller than the sum of its proper divisors (138356074320).

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

65883844560 is a wasteful number, since it uses less digits than its factorization.

65883844560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274516035 (or 274516029 counting only the distinct ones).

The product of its (nonzero) digits is 22118400, while the sum is 57.

The spelling of 65883844560 in words is "sixty-five billion, eight hundred eighty-three million, eight hundred forty-four thousand, five hundred sixty".