685314361918032 has 320 divisors, whose sum is σ = 2238465999863808. Its totient is φ = 175486304448000.

The previous prime is 685314361918031. The next prime is 685314361918063. The reversal of 685314361918032 is 230819163413586.

It is a happy number.

It is a super-2 number, since 2×685314361918032² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685314361918031) 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, 5103136807 + ... + 5103271097.

Almost surely, 2^{685314361918032} 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 685314361918032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1119232999931904).

685314361918032 is an abundant number, since it is smaller than the sum of its proper divisors (1553151637945776).

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

685314361918032 is a wasteful number, since it uses less digits than its factorization.

685314361918032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153838 (or 153832 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 60.

The spelling of 685314361918032 in words is "six hundred eighty-five trillion, three hundred fourteen billion, three hundred sixty-one million, nine hundred eighteen thousand, thirty-two".