1528328252669 has 2 divisors, whose sum is σ = 1528328252670. Its totient is φ = 1528328252668.

The previous prime is 1528328252663. The next prime is 1528328252701. The reversal of 1528328252669 is 9662528238251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1521793632100 + 6534620569 = 1233610^2 + 80837^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1528328252669 is a prime.

It is a super-2 number, since 2×1528328252669² (a number of 25 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 (1528328252663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 764164126334 + 764164126335.

It is an arithmetic number, because the mean of its divisors is an integer number (764164126335).

Almost surely, 2^{1528328252669} is an apocalyptic number.

It is an amenable number.

1528328252669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1528328252669 is an equidigital number, since it uses as much as digits as its factorization.

1528328252669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24883200, while the sum is 59.

The spelling of 1528328252669 in words is "one trillion, five hundred twenty-eight billion, three hundred twenty-eight million, two hundred fifty-two thousand, six hundred sixty-nine".