685828161601792 has 108 divisors (see below), whose sum is σ = 1516592035345408. Its totient is φ = 309285425433600.

The previous prime is 685828161601777. The next prime is 685828161601841. The reversal of 685828161601792 is 297106161828586.

It is a super-2 number, since 2×685828161601792² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83233884 + ... + 91101787.

Almost surely, 2^{685828161601792} is an apocalyptic number.

It is an amenable number.

685828161601792 is an abundant number, since it is smaller than the sum of its proper divisors (830763873743616).

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

685828161601792 is a wasteful number, since it uses less digits than its factorization.

685828161601792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174335836 (or 174335811 counting only the distinct ones).

The product of its (nonzero) digits is 139345920, while the sum is 70.

The spelling of 685828161601792 in words is "six hundred eighty-five trillion, eight hundred twenty-eight billion, one hundred sixty-one million, six hundred one thousand, seven hundred ninety-two".