627878922049 has 2 divisors, whose sum is σ = 627878922050. Its totient is φ = 627878922048.

The previous prime is 627878922043. The next prime is 627878922109. The reversal of 627878922049 is 940229878726.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 623733493824 + 4145428225 = 789768^2 + 64385^2 .

It is a cyclic number.

It is not a de Polignac number, because 627878922049 - 2⁷ = 627878921921 is a prime.

It is not a weakly prime, because it can be changed into another prime (627878922043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313939461024 + 313939461025.

It is an arithmetic number, because the mean of its divisors is an integer number (313939461025).

Almost surely, 2^627878922049 is an apocalyptic number.

It is an amenable number.

627878922049 is a deficient number, since it is larger than the sum of its proper divisors (1).

627878922049 is an equidigital number, since it uses as much as digits as its factorization.

627878922049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48771072, while the sum is 64.

The spelling of 627878922049 in words is "six hundred twenty-seven billion, eight hundred seventy-eight million, nine hundred twenty-two thousand, forty-nine".