240261068543 has 4 divisors (see below), whose sum is σ = 252906387960. Its totient is φ = 227615749128.

The previous prime is 240261068539. The next prime is 240261068587. The reversal of 240261068543 is 345860162042.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 240261068543 - 2² = 240261068539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240261068543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240261068513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6322659680 + ... + 6322659717.

It is an arithmetic number, because the mean of its divisors is an integer number (63226596990).

Almost surely, 2^240261068543 is an apocalyptic number.

240261068543 is a deficient number, since it is larger than the sum of its proper divisors (12645319417).

240261068543 is a wasteful number, since it uses less digits than its factorization.

240261068543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12645319416.

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 240261068543 in words is "two hundred forty billion, two hundred sixty-one million, sixty-eight thousand, five hundred forty-three".