85760536661 has 2 divisors, whose sum is σ = 85760536662. Its totient is φ = 85760536660.

The previous prime is 85760536639. The next prime is 85760536663. The reversal of 85760536661 is 16663506758.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78789121636 + 6971415025 = 280694^2 + 83495^2 .

It is a cyclic number.

It is not a de Polignac number, because 85760536661 - 2¹⁸ = 85760274517 is a prime.

It is a Sophie Germain prime.

Together with 85760536663, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85760536663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42880268330 + 42880268331.

It is an arithmetic number, because the mean of its divisors is an integer number (42880268331).

Almost surely, 2^85760536661 is an apocalyptic number.

It is an amenable number.

85760536661 is a deficient number, since it is larger than the sum of its proper divisors (1).

85760536661 is an equidigital number, since it uses as much as digits as its factorization.

85760536661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 85760536661 in words is "eighty-five billion, seven hundred sixty million, five hundred thirty-six thousand, six hundred sixty-one".