280302505069 has 2 divisors, whose sum is σ = 280302505070. Its totient is φ = 280302505068.

The previous prime is 280302504991. The next prime is 280302505073. The reversal of 280302505069 is 960505203082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 270769326025 + 9533179044 = 520355^2 + 97638^2 .

It is a cyclic number.

It is not a de Polignac number, because 280302505069 - 2²⁷ = 280168287341 is a prime.

It is a super-2 number, since 2×280302505069² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280302502069) 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, 140151252534 + 140151252535.

It is an arithmetic number, because the mean of its divisors is an integer number (140151252535).

Almost surely, 2^280302505069 is an apocalyptic number.

It is an amenable number.

280302505069 is a deficient number, since it is larger than the sum of its proper divisors (1).

280302505069 is an equidigital number, since it uses as much as digits as its factorization.

280302505069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 280302505069 in words is "two hundred eighty billion, three hundred two million, five hundred five thousand, sixty-nine".