85170523412 has 48 divisors (see below), whose sum is σ = 164231128320. Its totient is φ = 38402163072.

The previous prime is 85170523393. The next prime is 85170523423. The reversal of 85170523412 is 21432507158.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1305014 + ... + 1368722.

It is an arithmetic number, because the mean of its divisors is an integer number (3421481840).

Almost surely, 2^85170523412 is an apocalyptic number.

It is an amenable number.

85170523412 is a deficient number, since it is larger than the sum of its proper divisors (79060604908).

85170523412 is a wasteful number, since it uses less digits than its factorization.

85170523412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64320 (or 64318 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 85170523412 in words is "eighty-five billion, one hundred seventy million, five hundred twenty-three thousand, four hundred twelve".