258938261243 has 2 divisors, whose sum is σ = 258938261244. Its totient is φ = 258938261242.

The previous prime is 258938261209. The next prime is 258938261287. The reversal of 258938261243 is 342162839852.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258938261243 is a prime.

It is not a weakly prime, because it can be changed into another prime (258938201243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129469130621 + 129469130622.

It is an arithmetic number, because the mean of its divisors is an integer number (129469130622).

Almost surely, 2^258938261243 is an apocalyptic number.

258938261243 is a deficient number, since it is larger than the sum of its proper divisors (1).

258938261243 is an equidigital number, since it uses as much as digits as its factorization.

258938261243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4976640, while the sum is 53.

The spelling of 258938261243 in words is "two hundred fifty-eight billion, nine hundred thirty-eight million, two hundred sixty-one thousand, two hundred forty-three".