97665982766 has 16 divisors (see below), whose sum is σ = 159998087808. Its totient is φ = 44343343800.

The previous prime is 97665982747. The next prime is 97665982789. The reversal of 97665982766 is 66728956679.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 97665982766.

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 7 ways as a sum of consecutive naturals, for example, 2494370 + ... + 2533221.

It is an arithmetic number, because the mean of its divisors is an integer number (9999880488).

Almost surely, 2^97665982766 is an apocalyptic number.

97665982766 is a deficient number, since it is larger than the sum of its proper divisors (62332105042).

97665982766 is a wasteful number, since it uses less digits than its factorization.

97665982766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5028487.

The product of its digits is 411505920, while the sum is 71.

The spelling of 97665982766 in words is "ninety-seven billion, six hundred sixty-five million, nine hundred eighty-two thousand, seven hundred sixty-six".