84865809600 has 504 divisors, whose sum is σ = 354374787312. Its totient is φ = 18990489600.

The previous prime is 84865809569. The next prime is 84865809661. The reversal of 84865809600 is 690856848.

It is a happy number.

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 71 ways as a sum of consecutive naturals, for example, 2038594 + ... + 2079806.

It is an arithmetic number, because the mean of its divisors is an integer number (703124578).

Almost surely, 2^84865809600 is an apocalyptic number.

84865809600 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84865809600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177187393656).

84865809600 is an abundant number, since it is smaller than the sum of its proper divisors (269508977712).

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

84865809600 is a wasteful number, since it uses less digits than its factorization.

84865809600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41265 (or 41247 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 84865809600 in words is "eighty-four billion, eight hundred sixty-five million, eight hundred nine thousand, six hundred".