728549225899 has 4 divisors (see below), whose sum is σ = 794780973720. Its totient is φ = 662317478080.

The previous prime is 728549225897. The next prime is 728549225909. The reversal of 728549225899 is 998522945827.

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 728549225899 - 2¹ = 728549225897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728549225891) 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, 33115873894 + ... + 33115873915.

It is an arithmetic number, because the mean of its divisors is an integer number (198695243430).

Almost surely, 2^728549225899 is an apocalyptic number.

728549225899 is a deficient number, since it is larger than the sum of its proper divisors (66231747821).

728549225899 is a wasteful number, since it uses less digits than its factorization.

728549225899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66231747820.

The product of its digits is 261273600, while the sum is 70.

The spelling of 728549225899 in words is "seven hundred twenty-eight billion, five hundred forty-nine million, two hundred twenty-five thousand, eight hundred ninety-nine".