280807040849 has 2 divisors, whose sum is σ = 280807040850. Its totient is φ = 280807040848.

The previous prime is 280807040777. The next prime is 280807040863. The reversal of 280807040849 is 948040708082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216440813824 + 64366227025 = 465232^2 + 253705^2 .

It is a cyclic number.

It is not a de Polignac number, because 280807040849 - 2⁸ = 280807040593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 280807040797 and 280807040806.

It is not a weakly prime, because it can be changed into another prime (280807040749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140403520424 + 140403520425.

It is an arithmetic number, because the mean of its divisors is an integer number (140403520425).

Almost surely, 2^280807040849 is an apocalyptic number.

It is an amenable number.

280807040849 is a deficient number, since it is larger than the sum of its proper divisors (1).

280807040849 is an equidigital number, since it uses as much as digits as its factorization.

280807040849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1032192, while the sum is 50.

The spelling of 280807040849 in words is "two hundred eighty billion, eight hundred seven million, forty thousand, eight hundred forty-nine".