680519380109 has 16 divisors (see below), whose sum is σ = 722613830400. Its totient is φ = 639808755264.

The previous prime is 680519380103. The next prime is 680519380157. The reversal of 680519380109 is 901083915086.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 680519380109 - 2³⁶ = 611799903373 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680519380103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 998699 + ... + 1535720.

It is an arithmetic number, because the mean of its divisors is an integer number (45163364400).

Almost surely, 2^680519380109 is an apocalyptic number.

It is an amenable number.

680519380109 is a deficient number, since it is larger than the sum of its proper divisors (42094450291).

680519380109 is a wasteful number, since it uses less digits than its factorization.

680519380109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2534692.

The product of its (nonzero) digits is 466560, while the sum is 50.

The spelling of 680519380109 in words is "six hundred eighty billion, five hundred nineteen million, three hundred eighty thousand, one hundred nine".