85811028526247 has 4 divisors (see below), whose sum is σ = 85811111303880. Its totient is φ = 85810945748616.

The previous prime is 85811028526163. The next prime is 85811028526253. The reversal of 85811028526247 is 74262582011858.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85811028526247 - 2¹⁰ = 85811028525223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85811028526147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39813872 + ... + 41913797.

It is an arithmetic number, because the mean of its divisors is an integer number (21452777825970).

Almost surely, 2^{85811028526247} is an apocalyptic number.

85811028526247 is a deficient number, since it is larger than the sum of its proper divisors (82777633).

85811028526247 is a wasteful number, since it uses less digits than its factorization.

85811028526247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82777632.

The product of its (nonzero) digits is 17203200, while the sum is 59.

The spelling of 85811028526247 in words is "eighty-five trillion, eight hundred eleven billion, twenty-eight million, five hundred twenty-six thousand, two hundred forty-seven".