728223344853 has 4 divisors (see below), whose sum is σ = 970964459808. Its totient is φ = 485482229900.

The previous prime is 728223344843. The next prime is 728223344939. The reversal of 728223344853 is 358443322827.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 358443322827 = 3 ⋅119481107609.

It is a cyclic number.

It is not a de Polignac number, because 728223344853 - 2¹³ = 728223336661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 728223344796 and 728223344805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728223344833) 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, 121370557473 + ... + 121370557478.

It is an arithmetic number, because the mean of its divisors is an integer number (242741114952).

Almost surely, 2^728223344853 is an apocalyptic number.

It is an amenable number.

728223344853 is a deficient number, since it is larger than the sum of its proper divisors (242741114955).

728223344853 is a wasteful number, since it uses less digits than its factorization.

728223344853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242741114954.

The product of its digits is 7741440, while the sum is 51.

The spelling of 728223344853 in words is "seven hundred twenty-eight billion, two hundred twenty-three million, three hundred forty-four thousand, eight hundred fifty-three".