65811680552 has 16 divisors (see below), whose sum is σ = 123532964160. Its totient is φ = 32869556784.

The previous prime is 65811680537. The next prime is 65811680569. The reversal of 65811680552 is 25508611856.

65811680552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 65811680497 and 65811680506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4527728 + ... + 4542239.

It is an arithmetic number, because the mean of its divisors is an integer number (7720810260).

Almost surely, 2^65811680552 is an apocalyptic number.

It is an amenable number.

65811680552 is a deficient number, since it is larger than the sum of its proper divisors (57721283608).

65811680552 is a wasteful number, since it uses less digits than its factorization.

65811680552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9070880 (or 9070876 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 47.

The spelling of 65811680552 in words is "sixty-five billion, eight hundred eleven million, six hundred eighty thousand, five hundred fifty-two".