328705875629 has 2 divisors, whose sum is σ = 328705875630. Its totient is φ = 328705875628.

The previous prime is 328705875601. The next prime is 328705875637. The reversal of 328705875629 is 926578507823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309970562500 + 18735313129 = 556750^2 + 136877^2 .

It is a cyclic number.

It is not a de Polignac number, because 328705875629 - 2¹⁶ = 328705810093 is a prime.

It is a super-2 number, since 2×328705875629² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328705875689) 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, 164352937814 + 164352937815.

It is an arithmetic number, because the mean of its divisors is an integer number (164352937815).

Almost surely, 2^328705875629 is an apocalyptic number.

It is an amenable number.

328705875629 is a deficient number, since it is larger than the sum of its proper divisors (1).

328705875629 is an equidigital number, since it uses as much as digits as its factorization.

328705875629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50803200, while the sum is 62.

The spelling of 328705875629 in words is "three hundred twenty-eight billion, seven hundred five million, eight hundred seventy-five thousand, six hundred twenty-nine".