280706862349 has 2 divisors, whose sum is σ = 280706862350. Its totient is φ = 280706862348.

The previous prime is 280706862343. The next prime is 280706862367. The reversal of 280706862349 is 943268607082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261908532900 + 18798329449 = 511770^2 + 137107^2 .

It is a cyclic number.

It is not a de Polignac number, because 280706862349 - 2⁷ = 280706862221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 280706862349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280706862343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140353431174 + 140353431175.

It is an arithmetic number, because the mean of its divisors is an integer number (140353431175).

Almost surely, 2^280706862349 is an apocalyptic number.

It is an amenable number.

280706862349 is a deficient number, since it is larger than the sum of its proper divisors (1).

280706862349 is an equidigital number, since it uses as much as digits as its factorization.

280706862349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6967296, while the sum is 55.

The spelling of 280706862349 in words is "two hundred eighty billion, seven hundred six million, eight hundred sixty-two thousand, three hundred forty-nine".