728644183653 has 16 divisors (see below), whose sum is σ = 972405000000. Its totient is φ = 485323238400.

The previous prime is 728644183601. The next prime is 728644183667. The reversal of 728644183653 is 356381446827.

It is a happy number.

It is not a de Polignac number, because 728644183653 - 2²⁹ = 728107312741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 728644183593 and 728644183602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728644183753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21573223 + ... + 21606971.

It is an arithmetic number, because the mean of its divisors is an integer number (60775312500).

Almost surely, 2^728644183653 is an apocalyptic number.

It is an amenable number.

728644183653 is a deficient number, since it is larger than the sum of its proper divisors (243760816347).

728644183653 is a wasteful number, since it uses less digits than its factorization.

728644183653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40052.

The product of its digits is 23224320, while the sum is 57.

The spelling of 728644183653 in words is "seven hundred twenty-eight billion, six hundred forty-four million, one hundred eighty-three thousand, six hundred fifty-three".