85764810066855 has 16 divisors (see below), whose sum is σ = 137656578436704. Its totient is φ = 45596937925760.

The previous prime is 85764810066829. The next prime is 85764810066899. The reversal of 85764810066855 is 55866001846758.

It is not a de Polignac number, because 85764810066855 - 2¹⁴ = 85764810050471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85764810066855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9018376956 + ... + 9018386465.

It is an arithmetic number, because the mean of its divisors is an integer number (8603536152294).

Almost surely, 2^{85764810066855} is an apocalyptic number.

85764810066855 is a deficient number, since it is larger than the sum of its proper divisors (51891768369849).

85764810066855 is a wasteful number, since it uses less digits than its factorization.

85764810066855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18036763746.

The product of its (nonzero) digits is 387072000, while the sum is 69.

The spelling of 85764810066855 in words is "eighty-five trillion, seven hundred sixty-four billion, eight hundred ten million, sixty-six thousand, eight hundred fifty-five".