678391580099 has 2 divisors, whose sum is σ = 678391580100. Its totient is φ = 678391580098.

The previous prime is 678391580051. The next prime is 678391580123. The reversal of 678391580099 is 990085193876.

678391580099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-678391580099 is a prime.

It is not a weakly prime, because it can be changed into another prime (678391580299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339195790049 + 339195790050.

It is an arithmetic number, because the mean of its divisors is an integer number (339195790050).

Almost surely, 2^678391580099 is an apocalyptic number.

678391580099 is a deficient number, since it is larger than the sum of its proper divisors (1).

678391580099 is an equidigital number, since it uses as much as digits as its factorization.

678391580099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29393280, while the sum is 65.

The spelling of 678391580099 in words is "six hundred seventy-eight billion, three hundred ninety-one million, five hundred eighty thousand, ninety-nine".