65605005656 has 16 divisors (see below), whose sum is σ = 125025933840. Its totient is φ = 32264756640.

The previous prime is 65605005647. The next prime is 65605005671. The reversal of 65605005656 is 65650050656.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 67217756 + ... + 67218731.

It is an arithmetic number, because the mean of its divisors is an integer number (7814120865).

Almost surely, 2^65605005656 is an apocalyptic number.

It is an amenable number.

65605005656 is a deficient number, since it is larger than the sum of its proper divisors (59420928184).

65605005656 is a wasteful number, since it uses less digits than its factorization.

65605005656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134436554 (or 134436550 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 44.

The spelling of 65605005656 in words is "sixty-five billion, six hundred five million, five thousand, six hundred fifty-six".