628178666579 has 2 divisors, whose sum is σ = 628178666580. Its totient is φ = 628178666578.

The previous prime is 628178666569. The next prime is 628178666617. The reversal of 628178666579 is 975666871826.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628178666579 is a prime.

It is not a weakly prime, because it can be changed into another prime (628178666509) by changing a digit.

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 as a sum of consecutive naturals, namely, 314089333289 + 314089333290.

It is an arithmetic number, because the mean of its divisors is an integer number (314089333290).

Almost surely, 2^628178666579 is an apocalyptic number.

628178666579 is a deficient number, since it is larger than the sum of its proper divisors (1).

628178666579 is an equidigital number, since it uses as much as digits as its factorization.

628178666579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 365783040, while the sum is 71.

The spelling of 628178666579 in words is "six hundred twenty-eight billion, one hundred seventy-eight million, six hundred sixty-six thousand, five hundred seventy-nine".