7217766611055 has 96 divisors (see below), whose sum is σ = 16797711490560. Its totient is φ = 2768853507840.

The previous prime is 7217766610997. The next prime is 7217766611087. The reversal of 7217766611055 is 5501166677127.

It is not a de Polignac number, because 7217766611055 - 2⁹ = 7217766610543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7217766610992 and 7217766611010.

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 95 ways as a sum of consecutive naturals, for example, 80072245 + ... + 80162334.

It is an arithmetic number, because the mean of its divisors is an integer number (174976161360).

Almost surely, 2^{7217766611055} is an apocalyptic number.

7217766611055 is an abundant number, since it is smaller than the sum of its proper divisors (9579944879505).

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

7217766611055 is a wasteful number, since it uses less digits than its factorization.

7217766611055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160234621 (or 160234618 counting only the distinct ones).

The product of its (nonzero) digits is 3704400, while the sum is 54.

The spelling of 7217766611055 in words is "seven trillion, two hundred seventeen billion, seven hundred sixty-six million, six hundred eleven thousand, fifty-five".