280775000293 has 2 divisors, whose sum is σ = 280775000294. Its totient is φ = 280775000292.

The previous prime is 280775000281. The next prime is 280775000329. The reversal of 280775000293 is 392000577082.

Together with next prime (280775000329) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192599855044 + 88175145249 = 438862^2 + 296943^2 .

It is a cyclic number.

It is not a de Polignac number, because 280775000293 - 2⁹ = 280774999781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280775000243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140387500146 + 140387500147.

It is an arithmetic number, because the mean of its divisors is an integer number (140387500147).

Almost surely, 2^280775000293 is an apocalyptic number.

It is an amenable number.

280775000293 is a deficient number, since it is larger than the sum of its proper divisors (1).

280775000293 is an equidigital number, since it uses as much as digits as its factorization.

280775000293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 280775000293 in words is "two hundred eighty billion, seven hundred seventy-five million, two hundred ninety-three", and thus it is an aban number.