85710075438 has 64 divisors (see below), whose sum is σ = 194432797440. Its totient is φ = 24970125312.

The previous prime is 85710075401. The next prime is 85710075439. The reversal of 85710075438 is 83457001758.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85710075439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2751406 + ... + 2782382.

It is an arithmetic number, because the mean of its divisors is an integer number (3038012460).

Almost surely, 2^85710075438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85710075438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97216398720).

85710075438 is an abundant number, since it is smaller than the sum of its proper divisors (108722722002).

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

85710075438 is a wasteful number, since it uses less digits than its factorization.

85710075438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32881.

The product of its (nonzero) digits is 940800, while the sum is 48.

The spelling of 85710075438 in words is "eighty-five billion, seven hundred ten million, seventy-five thousand, four hundred thirty-eight".