65161115550616 has 8 divisors (see below), whose sum is σ = 122177091657420. Its totient is φ = 32580557775304.

The previous prime is 65161115550529. The next prime is 65161115550631. The reversal of 65161115550616 is 61605551116156.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 65161115550616.

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 as a sum of consecutive naturals, namely, 4072569721906 + ... + 4072569721921.

Almost surely, 2^{65161115550616} is an apocalyptic number.

It is an amenable number.

65161115550616 is a deficient number, since it is larger than the sum of its proper divisors (57015976106804).

65161115550616 is a wasteful number, since it uses less digits than its factorization.

65161115550616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8145139443833 (or 8145139443829 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 49.

The spelling of 65161115550616 in words is "sixty-five trillion, one hundred sixty-one billion, one hundred fifteen million, five hundred fifty thousand, six hundred sixteen".