85431881545116 has 48 divisors (see below), whose sum is σ = 212360796278400. Its totient is φ = 26653446868032.

The previous prime is 85431881545111. The next prime is 85431881545117. The reversal of 85431881545116 is 61154518813458.

It is a self number, because there is not a number n which added to its sum of digits gives 85431881545116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85431881545111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2257217431 + ... + 2257255278.

It is an arithmetic number, because the mean of its divisors is an integer number (4424183255800).

Almost surely, 2^{85431881545116} is an apocalyptic number.

It is an amenable number.

85431881545116 is an abundant number, since it is smaller than the sum of its proper divisors (126928914733284).

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

85431881545116 is a wasteful number, since it uses less digits than its factorization.

85431881545116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4514472818 (or 4514472816 counting only the distinct ones).

The product of its digits is 18432000, while the sum is 60.

The spelling of 85431881545116 in words is "eighty-five trillion, four hundred thirty-one billion, eight hundred eighty-one million, five hundred forty-five thousand, one hundred sixteen".