65564516650 has 12 divisors (see below), whose sum is σ = 121950001062. Its totient is φ = 26225806640.

The previous prime is 65564516597. The next prime is 65564516701. The reversal of 65564516650 is 5661546556.

65564516650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 60921593329 + 4642923321 = 246823^2 + 68139^2 .

It is a junction number, because it is equal to n+sod(n) for n = 65564516594 and 65564516603.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 655645117 + ... + 655645216.

Almost surely, 2^65564516650 is an apocalyptic number.

65564516650 is a deficient number, since it is larger than the sum of its proper divisors (56385484412).

65564516650 is a wasteful number, since it uses less digits than its factorization.

65564516650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311290345 (or 1311290340 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 49.

The spelling of 65564516650 in words is "sixty-five billion, five hundred sixty-four million, five hundred sixteen thousand, six hundred fifty".