678623418122 has 16 divisors (see below), whose sum is σ = 1103497688832. Its totient is φ = 311136562800.

The previous prime is 678623418119. The next prime is 678623418173. The reversal of 678623418122 is 221814326876.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86422898 + ... + 86430749.

It is an arithmetic number, because the mean of its divisors is an integer number (68968605552).

Almost surely, 2^678623418122 is an apocalyptic number.

678623418122 is a deficient number, since it is larger than the sum of its proper divisors (424874270710).

678623418122 is a wasteful number, since it uses less digits than its factorization.

678623418122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172853813.

The product of its digits is 1548288, while the sum is 50.

The spelling of 678623418122 in words is "six hundred seventy-eight billion, six hundred twenty-three million, four hundred eighteen thousand, one hundred twenty-two".