726306643243 has 4 divisors (see below), whose sum is σ = 726308354128. Its totient is φ = 726304932360.

The previous prime is 726306643229. The next prime is 726306643301. The reversal of 726306643243 is 342346603627.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 726306643243 - 2¹⁷ = 726306512171 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 726306643193 and 726306643202.

It is not an unprimeable number, because it can be changed into a prime (726306641243) 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, 316738 + ... + 1246168.

It is an arithmetic number, because the mean of its divisors is an integer number (181577088532).

Almost surely, 2^726306643243 is an apocalyptic number.

726306643243 is a deficient number, since it is larger than the sum of its proper divisors (1710885).

726306643243 is an equidigital number, since it uses as much as digits as its factorization.

726306643243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710884.

The product of its (nonzero) digits is 2612736, while the sum is 46.

The spelling of 726306643243 in words is "seven hundred twenty-six billion, three hundred six million, six hundred forty-three thousand, two hundred forty-three".