65651005561606 has 16 divisors (see below), whose sum is σ = 98715913128000. Its totient is φ = 32745708134568.

The previous prime is 65651005561541. The next prime is 65651005561607. The reversal of 65651005561606 is 60616550015656.

It is a super-2 number, since 2×65651005561606² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65651005561607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17296081 + ... + 20747443.

It is an arithmetic number, because the mean of its divisors is an integer number (6169744570500).

Almost surely, 2^{65651005561606} is an apocalyptic number.

65651005561606 is a deficient number, since it is larger than the sum of its proper divisors (33064907566394).

65651005561606 is a wasteful number, since it uses less digits than its factorization.

65651005561606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474483.

The product of its (nonzero) digits is 4860000, while the sum is 52.

The spelling of 65651005561606 in words is "sixty-five trillion, six hundred fifty-one billion, five million, five hundred sixty-one thousand, six hundred six".