680161778813 has 8 divisors (see below), whose sum is σ = 742326090240. Its totient is φ = 618052704480.

The previous prime is 680161778801. The next prime is 680161778827. The reversal of 680161778813 is 318877161086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 680161778813 - 2¹⁶ = 680161713277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680161774813) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13783520 + ... + 13832777.

It is an arithmetic number, because the mean of its divisors is an integer number (92790761280).

Almost surely, 2^680161778813 is an apocalyptic number.

It is an amenable number.

680161778813 is a deficient number, since it is larger than the sum of its proper divisors (62164311427).

680161778813 is a wasteful number, since it uses less digits than its factorization.

680161778813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27618547.

The product of its (nonzero) digits is 2709504, while the sum is 56.

The spelling of 680161778813 in words is "six hundred eighty billion, one hundred sixty-one million, seven hundred seventy-eight thousand, eight hundred thirteen".