626040066677 has 2 divisors, whose sum is σ = 626040066678. Its totient is φ = 626040066676.

The previous prime is 626040066643. The next prime is 626040066683. The reversal of 626040066677 is 776660040626.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 475898541316 + 150141525361 = 689854^2 + 387481^2 .

It is a cyclic number.

It is not a de Polignac number, because 626040066677 - 2²⁴ = 626023289461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (626040066697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313020033338 + 313020033339.

It is an arithmetic number, because the mean of its divisors is an integer number (313020033339).

Almost surely, 2^626040066677 is an apocalyptic number.

It is an amenable number.

626040066677 is a deficient number, since it is larger than the sum of its proper divisors (1).

626040066677 is an equidigital number, since it uses as much as digits as its factorization.

626040066677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 50.

The spelling of 626040066677 in words is "six hundred twenty-six billion, forty million, sixty-six thousand, six hundred seventy-seven".