65923643536 has 15 divisors (see below), whose sum is σ = 127729049241. Its totient is φ = 32961308256.

The previous prime is 65923643519. The next prime is 65923643551. The reversal of 65923643536 is 63534632956.

The square root of 65923643536 is 256756.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 44840603536 + 21083040000 = 211756^2 + 145200^2 .

It is a Duffinian 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 2 ways as a sum of consecutive naturals, for example, 994930 + ... + 1059118.

Almost surely, 2^65923643536 is an apocalyptic number.

65923643536 is the 256756-th square number.

It is an amenable number.

65923643536 is a deficient number, since it is larger than the sum of its proper divisors (61805405705).

65923643536 is an frugal number, since it uses more digits than its factorization.

65923643536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128386 (or 64191 counting only the distinct ones).

The product of its digits is 10497600, while the sum is 52.

The spelling of 65923643536 in words is "sixty-five billion, nine hundred twenty-three million, six hundred forty-three thousand, five hundred thirty-six".