728674445243 has 4 divisors (see below), whose sum is σ = 728835910968. Its totient is φ = 728512979520.

The previous prime is 728674445197. The next prime is 728674445309. The reversal of 728674445243 is 342544476827.

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 728674445243 - 2⁶ = 728674445179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728674435243) 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, 80726093 + ... + 80735118.

It is an arithmetic number, because the mean of its divisors is an integer number (182208977742).

Almost surely, 2^728674445243 is an apocalyptic number.

728674445243 is a deficient number, since it is larger than the sum of its proper divisors (161465725).

728674445243 is a wasteful number, since it uses less digits than its factorization.

728674445243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161465724.

The product of its digits is 36126720, while the sum is 56.

The spelling of 728674445243 in words is "seven hundred twenty-eight billion, six hundred seventy-four million, four hundred forty-five thousand, two hundred forty-three".