680987135380 has 12 divisors (see below), whose sum is σ = 1430072984340. Its totient is φ = 272394854144.

The previous prime is 680987135347. The next prime is 680987135431. The reversal of 680987135380 is 83531789086.

It can be written as a sum of positive squares in 2 ways, for example, as 148735178244 + 532251957136 = 385662^2 + 729556^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 17024678365 + ... + 17024678404.

It is an arithmetic number, because the mean of its divisors is an integer number (119172748695).

Almost surely, 2^680987135380 is an apocalyptic number.

It is an amenable number.

680987135380 is an abundant number, since it is smaller than the sum of its proper divisors (749085848960).

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

680987135380 is a wasteful number, since it uses less digits than its factorization.

680987135380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34049356778 (or 34049356776 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 58.

The spelling of 680987135380 in words is "six hundred eighty billion, nine hundred eighty-seven million, one hundred thirty-five thousand, three hundred eighty".