65657112211068 has 72 divisors (see below), whose sum is σ = 178239145496832. Its totient is φ = 18756334519776.

The previous prime is 65657112211051. The next prime is 65657112211087. The reversal of 65657112211068 is 86011221175656.

It is a self number, because there is not a number n which added to its sum of digits gives 65657112211068.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4565346 + ... + 12335177.

It is an arithmetic number, because the mean of its divisors is an integer number (2475543687456).

Almost surely, 2^{65657112211068} is an apocalyptic number.

It is an amenable number.

65657112211068 is an abundant number, since it is smaller than the sum of its proper divisors (112582033285764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65657112211068 is a wasteful number, since it uses less digits than its factorization.

65657112211068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16907151 (or 16907142 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 51.

The spelling of 65657112211068 in words is "sixty-five trillion, six hundred fifty-seven billion, one hundred twelve million, two hundred eleven thousand, sixty-eight".