728715151573 has 4 divisors (see below), whose sum is σ = 728736661888. Its totient is φ = 728693641260.

The previous prime is 728715151547. The next prime is 728715151579. The reversal of 728715151573 is 375151517827.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 728715151573 - 2²⁵ = 728681597141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 728715151573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728715151579) 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, 10704261 + ... + 10772122.

It is an arithmetic number, because the mean of its divisors is an integer number (182184165472).

Almost surely, 2^728715151573 is an apocalyptic number.

It is an amenable number.

728715151573 is a deficient number, since it is larger than the sum of its proper divisors (21510315).

728715151573 is a wasteful number, since it uses less digits than its factorization.

728715151573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21510314.

The product of its digits is 2058000, while the sum is 52.

The spelling of 728715151573 in words is "seven hundred twenty-eight billion, seven hundred fifteen million, one hundred fifty-one thousand, five hundred seventy-three".