85128135060 has 96 divisors (see below), whose sum is σ = 243172040832. Its totient is φ = 22245949440.

The previous prime is 85128135013. The next prime is 85128135091. The reversal of 85128135060 is 6053182158.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 721000 + ... + 830720.

It is an arithmetic number, because the mean of its divisors is an integer number (2533042092).

Almost surely, 2^85128135060 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85128135060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121586020416).

85128135060 is an abundant number, since it is smaller than the sum of its proper divisors (158043905772).

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

85128135060 is a wasteful number, since it uses less digits than its factorization.

85128135060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109993 (or 109991 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 39.

The spelling of 85128135060 in words is "eighty-five billion, one hundred twenty-eight million, one hundred thirty-five thousand, sixty".