728239903953 has 16 divisors (see below), whose sum is σ = 1028160853056. Its totient is φ = 456909304320.

The previous prime is 728239903933. The next prime is 728239904059. The reversal of 728239903953 is 359309932827.

728239903953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 728239903953 - 2²¹ = 728237806801 is a prime.

It is a super-4 number, since 4×728239903953⁴ (a number of 49 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (728239903933) 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, 544098 + ... + 1323828.

It is an arithmetic number, because the mean of its divisors is an integer number (64260053316).

Almost surely, 2^728239903953 is an apocalyptic number.

It is an amenable number.

728239903953 is a deficient number, since it is larger than the sum of its proper divisors (299920949103).

728239903953 is a wasteful number, since it uses less digits than its factorization.

728239903953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798064.

The product of its (nonzero) digits is 22044960, while the sum is 60.

The spelling of 728239903953 in words is "seven hundred twenty-eight billion, two hundred thirty-nine million, nine hundred three thousand, nine hundred fifty-three".