678707959122 has 24 divisors (see below), whose sum is σ = 1473422995980. Its totient is φ = 225791511840.

The previous prime is 678707959103. The next prime is 678707959151. The reversal of 678707959122 is 221959707876.

It can be written as a sum of positive squares in 2 ways, for example, as 674170724241 + 4537234881 = 821079^2 + 67359^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 678707959122.

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 11 ways as a sum of consecutive naturals, for example, 37030129 + ... + 37048452.

Almost surely, 2^678707959122 is an apocalyptic number.

678707959122 is an abundant number, since it is smaller than the sum of its proper divisors (794715036858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678707959122 is a wasteful number, since it uses less digits than its factorization.

678707959122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74079098 (or 74079095 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 63.

The spelling of 678707959122 in words is "six hundred seventy-eight billion, seven hundred seven million, nine hundred fifty-nine thousand, one hundred twenty-two".