85166768508 has 24 divisors (see below), whose sum is σ = 198766157520. Its totient is φ = 28382680320.

The previous prime is 85166768501. The next prime is 85166768527. The reversal of 85166768508 is 80586766158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85166768501) 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 7 ways as a sum of consecutive naturals, for example, 723303 + ... + 832766.

It is an arithmetic number, because the mean of its divisors is an integer number (8281923230).

Almost surely, 2^85166768508 is an apocalyptic number.

It is an amenable number.

85166768508 is an abundant number, since it is smaller than the sum of its proper divisors (113599389012).

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

85166768508 is a wasteful number, since it uses less digits than its factorization.

85166768508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560637 (or 1560635 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 60.

The spelling of 85166768508 in words is "eighty-five billion, one hundred sixty-six million, seven hundred sixty-eight thousand, five hundred eight".