678082744161 has 12 divisors (see below), whose sum is σ = 1005924551892. Its totient is φ = 439837455456.

The previous prime is 678082744159. The next prime is 678082744201. The reversal of 678082744161 is 161447280876.

678082744161 is a `hidden beast` number, since 6 + 7 + 80 + 82 + 74 + 416 + 1 = 666.

678082744161 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 612375111936 + 65707632225 = 782544^2 + 256335^2 .

It is not a de Polignac number, because 678082744161 - 2¹ = 678082744159 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 678082744098 and 678082744107.

It is not an unprimeable number, because it can be changed into a prime (678082744111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1018141926 + ... + 1018142591.

It is an arithmetic number, because the mean of its divisors is an integer number (83827045991).

Almost surely, 2^678082744161 is an apocalyptic number.

It is an amenable number.

678082744161 is a deficient number, since it is larger than the sum of its proper divisors (327841807731).

678082744161 is a wasteful number, since it uses less digits than its factorization.

678082744161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036284560 (or 2036284557 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The spelling of 678082744161 in words is "six hundred seventy-eight billion, eighty-two million, seven hundred forty-four thousand, one hundred sixty-one".