268073543 has 4 divisors (see below), whose sum is σ = 268508640. Its totient is φ = 267638448.

The previous prime is 268073537. The next prime is 268073551. The reversal of 268073543 is 345370862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345370862 = 2 ⋅172685431.

It is a cyclic number.

It is not a de Polignac number, because 268073543 - 2⁶ = 268073479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268073497 and 268073506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268073563) 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 in 3 ways as a sum of consecutive naturals, for example, 216623 + ... + 217856.

It is an arithmetic number, because the mean of its divisors is an integer number (67127160).

Almost surely, 2^268073543 is an apocalyptic number.

268073543 is a deficient number, since it is larger than the sum of its proper divisors (435097).

268073543 is an equidigital number, since it uses as much as digits as its factorization.

268073543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435096.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 268073543 is about 16372.9515665319. The cubic root of 268073543 is about 644.7895417367.

The spelling of 268073543 in words is "two hundred sixty-eight million, seventy-three thousand, five hundred forty-three".