249571230673 has 2 divisors, whose sum is σ = 249571230674. Its totient is φ = 249571230672.

The previous prime is 249571230631. The next prime is 249571230709. The reversal of 249571230673 is 376032175942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163694686464 + 85876544209 = 404592^2 + 293047^2 .

It is a cyclic number.

It is not a de Polignac number, because 249571230673 - 2²¹ = 249569133521 is a prime.

It is not a weakly prime, because it can be changed into another prime (249571231673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124785615336 + 124785615337.

It is an arithmetic number, because the mean of its divisors is an integer number (124785615337).

Almost surely, 2^249571230673 is an apocalyptic number.

It is an amenable number.

249571230673 is a deficient number, since it is larger than the sum of its proper divisors (1).

249571230673 is an equidigital number, since it uses as much as digits as its factorization.

249571230673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1905120, while the sum is 49.

The spelling of 249571230673 in words is "two hundred forty-nine billion, five hundred seventy-one million, two hundred thirty thousand, six hundred seventy-three".