85865271508624 has 20 divisors (see below), whose sum is σ = 173597179355136. Its totient is φ = 41065999416992.

The previous prime is 85865271508609. The next prime is 85865271508637. The reversal of 85865271508624 is 42680517256858.

It is a self number, because there is not a number n which added to its sum of digits gives 85865271508624.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116664770704 + ... + 116664771439.

Almost surely, 2^{85865271508624} is an apocalyptic number.

It is an amenable number.

85865271508624 is an abundant number, since it is smaller than the sum of its proper divisors (87731907846512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85865271508624 is a wasteful number, since it uses less digits than its factorization.

85865271508624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233329542174 (or 233329542168 counting only the distinct ones).

The product of its (nonzero) digits is 258048000, while the sum is 67.

The spelling of 85865271508624 in words is "eighty-five trillion, eight hundred sixty-five billion, two hundred seventy-one million, five hundred eight thousand, six hundred twenty-four".