85865761264687 has 2 divisors, whose sum is σ = 85865761264688. Its totient is φ = 85865761264686.

The previous prime is 85865761264637. The next prime is 85865761264711. The reversal of 85865761264687 is 78646216756858.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85865761264687 - 2¹⁵ = 85865761231919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85865761264607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42932880632343 + 42932880632344.

It is an arithmetic number, because the mean of its divisors is an integer number (42932880632344).

Almost surely, 2^{85865761264687} is an apocalyptic number.

85865761264687 is a deficient number, since it is larger than the sum of its proper divisors (1).

85865761264687 is an equidigital number, since it uses as much as digits as its factorization.

85865761264687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6502809600, while the sum is 79.

The spelling of 85865761264687 in words is "eighty-five trillion, eight hundred sixty-five billion, seven hundred sixty-one million, two hundred sixty-four thousand, six hundred eighty-seven".