65650657655 has 16 divisors (see below), whose sum is σ = 86285098368. Its totient is φ = 47555700000.

The previous prime is 65650657643. The next prime is 65650657661. The reversal of 65650657655 is 55675605656.

It is not a de Polignac number, because 65650657655 - 2¹² = 65650653559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65650657655.

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 15 ways as a sum of consecutive naturals, for example, 2363981 + ... + 2391590.

It is an arithmetic number, because the mean of its divisors is an integer number (5392818648).

Almost surely, 2^65650657655 is an apocalyptic number.

65650657655 is a deficient number, since it is larger than the sum of its proper divisors (20634440713).

65650657655 is a wasteful number, since it uses less digits than its factorization.

65650657655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4755838.

The product of its (nonzero) digits is 28350000, while the sum is 56.

The spelling of 65650657655 in words is "sixty-five billion, six hundred fifty million, six hundred fifty-seven thousand, six hundred fifty-five".