685492496529120 has 384 divisors, whose sum is σ = 2775821477345280. Its totient is φ = 156683998646784.

The previous prime is 685492496529109. The next prime is 685492496529121. The reversal of 685492496529120 is 21925694294586.

685492496529120 is a `hidden beast` number, since 6 + 8 + 5 + 4 + 9 + 2 + 4 + 96 + 529 + 1 + 2 + 0 = 666.

685492496529120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685492496529121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 137478972 + ... + 142377851.

It is an arithmetic number, because the mean of its divisors is an integer number (7228701763920).

Almost surely, 2^{685492496529120} is an apocalyptic number.

685492496529120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

685492496529120 is an abundant number, since it is smaller than the sum of its proper divisors (2090328980816160).

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

685492496529120 is an equidigital number, since it uses as much as digits as its factorization.

685492496529120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279856866 (or 279856840 counting only the distinct ones).

The product of its (nonzero) digits is 671846400, while the sum is 72.

The spelling of 685492496529120 in words is "six hundred eighty-five trillion, four hundred ninety-two billion, four hundred ninety-six million, five hundred twenty-nine thousand, one hundred twenty".