85587532404221 has 4 divisors (see below), whose sum is σ = 85595661157500. Its totient is φ = 85579403650944.

The previous prime is 85587532404151. The next prime is 85587532404229. The reversal of 85587532404221 is 12240423578558.

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

It can be written as a sum of positive squares in 2 ways, for example, as 79260043701721 + 6327488702500 = 8902811^2 + 2515450^2 .

It is a cyclic number.

It is not a de Polignac number, because 85587532404221 - 2⁴⁶ = 15218788226557 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 (85587532404229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4064360846 + ... + 4064381903.

It is an arithmetic number, because the mean of its divisors is an integer number (21398915289375).

Almost surely, 2^{85587532404221} is an apocalyptic number.

It is an amenable number.

85587532404221 is a deficient number, since it is larger than the sum of its proper divisors (8128753279).

85587532404221 is a wasteful number, since it uses less digits than its factorization.

85587532404221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8128753278.

The product of its (nonzero) digits is 21504000, while the sum is 56.

The spelling of 85587532404221 in words is "eighty-five trillion, five hundred eighty-seven billion, five hundred thirty-two million, four hundred four thousand, two hundred twenty-one".