85310039520 has 288 divisors, whose sum is σ = 308294138880. Its totient is φ = 21421808640.

The previous prime is 85310039461. The next prime is 85310039527. The reversal of 85310039520 is 2593001358.

It is a tau number, because it is divible by the number of its divisors (288).

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 (85310039527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4559785 + ... + 4578455.

It is an arithmetic number, because the mean of its divisors is an integer number (1070465760).

Almost surely, 2^85310039520 is an apocalyptic number.

85310039520 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 85310039520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154147069440).

85310039520 is an abundant number, since it is smaller than the sum of its proper divisors (222984099360).

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

85310039520 is a wasteful number, since it uses less digits than its factorization.

85310039520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18878 (or 18867 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 85310039520 in words is "eighty-five billion, three hundred ten million, thirty-nine thousand, five hundred twenty".