85204439100 has 108 divisors (see below), whose sum is σ = 291347576520. Its totient is φ = 20655619200.

The previous prime is 85204439057. The next prime is 85204439101. The reversal of 85204439100 is 193440258.

85204439100 is a `hidden beast` number, since 8 + 5 + 204 + 439 + 10 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85204439101) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 4293355 + ... + 4313154.

Almost surely, 2^85204439100 is an apocalyptic number.

It is an amenable number.

85204439100 is an abundant number, since it is smaller than the sum of its proper divisors (206143137420).

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

85204439100 is a wasteful number, since it uses less digits than its factorization.

85204439100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8606540 (or 8606530 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

Adding to 85204439100 its reverse (193440258), we get a palindrome (85397879358).

The spelling of 85204439100 in words is "eighty-five billion, two hundred four million, four hundred thirty-nine thousand, one hundred".