248443242661 has 2 divisors, whose sum is σ = 248443242662. Its totient is φ = 248443242660.

The previous prime is 248443242581. The next prime is 248443242713. The reversal of 248443242661 is 166242344842.

248443242661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138015965025 + 110427277636 = 371505^2 + 332306^2 .

It is a cyclic number.

It is not a de Polignac number, because 248443242661 - 2⁷ = 248443242533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248443243661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124221621330 + 124221621331.

It is an arithmetic number, because the mean of its divisors is an integer number (124221621331).

Almost surely, 2^248443242661 is an apocalyptic number.

It is an amenable number.

248443242661 is a deficient number, since it is larger than the sum of its proper divisors (1).

248443242661 is an equidigital number, since it uses as much as digits as its factorization.

248443242661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1769472, while the sum is 46.

The spelling of 248443242661 in words is "two hundred forty-eight billion, four hundred forty-three million, two hundred forty-two thousand, six hundred sixty-one".