685159543008 has 36 divisors (see below), whose sum is σ = 1948422451248. Its totient is φ = 228386514240.

The previous prime is 685159542997. The next prime is 685159543009. The reversal of 685159543008 is 800345951586.

685159543008 is a `hidden beast` number, since 6 + 8 + 5 + 1 + 595 + 43 + 0 + 0 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685159543009) 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 5 ways as a sum of consecutive naturals, for example, 1189512808 + ... + 1189513383.

It is an arithmetic number, because the mean of its divisors is an integer number (54122845868).

Almost surely, 2^685159543008 is an apocalyptic number.

It is an amenable number.

685159543008 is an abundant number, since it is smaller than the sum of its proper divisors (1263262908240).

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

685159543008 is a wasteful number, since it uses less digits than its factorization.

685159543008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379026207 (or 2379026196 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 54.

The spelling of 685159543008 in words is "six hundred eighty-five billion, one hundred fifty-nine million, five hundred forty-three thousand, eight".