65651555650556 has 24 divisors (see below), whose sum is σ = 115788512426160. Its totient is φ = 32569416352512.

The previous prime is 65651555650481. The next prime is 65651555650657. The reversal of 65651555650556 is 65505655515656.

It is a junction number, because it is equal to n+sod(n) for n = 65651555650492 and 65651555650501.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35705261 + ... + 37498916.

It is an arithmetic number, because the mean of its divisors is an integer number (4824521351090).

Almost surely, 2^{65651555650556} is an apocalyptic number.

It is an amenable number.

65651555650556 is a deficient number, since it is larger than the sum of its proper divisors (50136956775604).

65651555650556 is a wasteful number, since it uses less digits than its factorization.

65651555650556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73205933 (or 73205931 counting only the distinct ones).

The product of its (nonzero) digits is 506250000, while the sum is 65.

The spelling of 65651555650556 in words is "sixty-five trillion, six hundred fifty-one billion, five hundred fifty-five million, six hundred fifty thousand, five hundred fifty-six".