680731045728 has 48 divisors (see below), whose sum is σ = 1797248050416. Its totient is φ = 225598722560.

The previous prime is 680731045699. The next prime is 680731045739. The reversal of 680731045728 is 827540137086.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-3 number, since 3×680731045728³ (a number of 36 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20477463 + ... + 20510678.

It is an arithmetic number, because the mean of its divisors is an integer number (37442667717).

Almost surely, 2^680731045728 is an apocalyptic number.

It is an amenable number.

680731045728 is an abundant number, since it is smaller than the sum of its proper divisors (1116517004688).

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

680731045728 is a wasteful number, since it uses less digits than its factorization.

680731045728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40988327 (or 40988319 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 680731045728 in words is "six hundred eighty billion, seven hundred thirty-one million, forty-five thousand, seven hundred twenty-eight".