678206767141 has 16 divisors (see below), whose sum is σ = 692360855280. Its totient is φ = 664104130560.

The previous prime is 678206767129. The next prime is 678206767151. The reversal of 678206767141 is 141767602876.

It can be written as a sum of positive squares in 8 ways, for example, as 202458602116 + 475748165025 = 449954^2 + 689745^2 .

It is a cyclic number.

It is not a de Polignac number, because 678206767141 - 2⁷ = 678206767013 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 (678206767111) 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, 80840575 + ... + 80848963.

It is an arithmetic number, because the mean of its divisors is an integer number (43272553455).

Almost surely, 2^678206767141 is an apocalyptic number.

It is an amenable number.

678206767141 is a deficient number, since it is larger than the sum of its proper divisors (14154088139).

678206767141 is a wasteful number, since it uses less digits than its factorization.

678206767141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11256.

The product of its (nonzero) digits is 4741632, while the sum is 55.

The spelling of 678206767141 in words is "six hundred seventy-eight billion, two hundred six million, seven hundred sixty-seven thousand, one hundred forty-one".