728073391295 has 4 divisors (see below), whose sum is σ = 873688069560. Its totient is φ = 582458713032.

The previous prime is 728073391277. The next prime is 728073391301. The reversal of 728073391295 is 592193370827.

It is a happy number.

728073391295 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 592193370827 = 29 ⋅20420461063.

It is a cyclic number.

It is not a de Polignac number, because 728073391295 - 2⁸ = 728073391039 is a prime.

It is a super-2 number, since 2×728073391295² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 728073391295.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72807339125 + ... + 72807339134.

It is an arithmetic number, because the mean of its divisors is an integer number (218422017390).

Almost surely, 2^728073391295 is an apocalyptic number.

728073391295 is a deficient number, since it is larger than the sum of its proper divisors (145614678265).

728073391295 is a wasteful number, since it uses less digits than its factorization.

728073391295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145614678264.

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 728073391295 in words is "seven hundred twenty-eight billion, seventy-three million, three hundred ninety-one thousand, two hundred ninety-five".