85011771582 has 24 divisors (see below), whose sum is σ = 195027006096. Its totient is φ = 26670359616.

The previous prime is 85011771557. The next prime is 85011771583. The reversal of 85011771582 is 28517711058.

85011771582 is a `hidden beast` number, since 8 + 50 + 1 + 17 + 7 + 1 + 582 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85011771583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138907818 + ... + 138908429.

It is an arithmetic number, because the mean of its divisors is an integer number (8126125254).

Almost surely, 2^85011771582 is an apocalyptic number.

85011771582 is an abundant number, since it is smaller than the sum of its proper divisors (110015234514).

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

85011771582 is a wasteful number, since it uses less digits than its factorization.

85011771582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277816272 (or 277816269 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 45.

The spelling of 85011771582 in words is "eighty-five billion, eleven million, seven hundred seventy-one thousand, five hundred eighty-two".