85642261208 has 64 divisors (see below), whose sum is σ = 193221504000. Its totient is φ = 34764221952.

The previous prime is 85642261193. The next prime is 85642261217. The reversal of 85642261208 is 80216224658.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8318528 + ... + 8328816.

It is an arithmetic number, because the mean of its divisors is an integer number (3019086000).

Almost surely, 2^85642261208 is an apocalyptic number.

It is an amenable number.

85642261208 is an abundant number, since it is smaller than the sum of its proper divisors (107579242792).

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

85642261208 is a wasteful number, since it uses less digits than its factorization.

85642261208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18144 (or 18140 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 44.

The spelling of 85642261208 in words is "eighty-five billion, six hundred forty-two million, two hundred sixty-one thousand, two hundred eight".