85171167788 has 12 divisors (see below), whose sum is σ = 170342335632. Its totient is φ = 36501929040.

The previous prime is 85171167787. The next prime is 85171167803. The reversal of 85171167788 is 88776117158.

85171167788 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (85171167787) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1520913683 + ... + 1520913738.

It is an arithmetic number, because the mean of its divisors is an integer number (14195194636).

Almost surely, 2^85171167788 is an apocalyptic number.

It is an amenable number.

85171167788 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

85171167788 is a wasteful number, since it uses less digits than its factorization.

85171167788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3041827432 (or 3041827430 counting only the distinct ones).

The product of its digits is 5268480, while the sum is 59.

The spelling of 85171167788 in words is "eighty-five billion, one hundred seventy-one million, one hundred sixty-seven thousand, seven hundred eighty-eight".