728858542053 has 4 divisors (see below), whose sum is σ = 971811389408. Its totient is φ = 485905694700.

The previous prime is 728858542037. The next prime is 728858542073. The reversal of 728858542053 is 350245858827.

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: 350245858827 = 3 ⋅116748619609.

It is not a de Polignac number, because 728858542053 - 2⁴ = 728858542037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 728858541984 and 728858542002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728858542073) 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, 121476423673 + ... + 121476423678.

It is an arithmetic number, because the mean of its divisors is an integer number (242952847352).

Almost surely, 2^728858542053 is an apocalyptic number.

It is an amenable number.

728858542053 is a deficient number, since it is larger than the sum of its proper divisors (242952847355).

728858542053 is a wasteful number, since it uses less digits than its factorization.

728858542053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242952847354.

The product of its (nonzero) digits is 21504000, while the sum is 57.

The spelling of 728858542053 in words is "seven hundred twenty-eight billion, eight hundred fifty-eight million, five hundred forty-two thousand, fifty-three".