685554050412 has 432 divisors, whose sum is σ = 2379760411392. Its totient is φ = 170320993920.

The previous prime is 685554050407. The next prime is 685554050437. The reversal of 685554050412 is 214050455586.

685554050412 is a `hidden beast` number, since 6 + 8 + 5 + 554 + 0 + 50 + 41 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 12021438 + ... + 12078330.

It is an arithmetic number, because the mean of its divisors is an integer number (5508704656).

Almost surely, 2^685554050412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685554050412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1189880205696).

685554050412 is an abundant number, since it is smaller than the sum of its proper divisors (1694206360980).

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

685554050412 is a wasteful number, since it uses less digits than its factorization.

685554050412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56960 (or 56939 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 45.

The spelling of 685554050412 in words is "six hundred eighty-five billion, five hundred fifty-four million, fifty thousand, four hundred twelve".