728613535545 has 48 divisors (see below), whose sum is σ = 1444779822720. Its totient is φ = 332750218752.

The previous prime is 728613535543. The next prime is 728613535567. The reversal of 728613535545 is 545535316827.

728613535545 is a `hidden beast` number, since 7 + 2 + 8 + 61 + 3 + 5 + 35 + 545 = 666.

It is not a de Polignac number, because 728613535545 - 2¹ = 728613535543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 728613535491 and 728613535500.

It is not an unprimeable number, because it can be changed into a prime (728613535543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 828379 + ... + 1464048.

It is an arithmetic number, because the mean of its divisors is an integer number (30099579640).

Almost surely, 2^728613535545 is an apocalyptic number.

It is an amenable number.

728613535545 is a deficient number, since it is larger than the sum of its proper divisors (716166287175).

728613535545 is a wasteful number, since it uses less digits than its factorization.

728613535545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2293454 (or 2293451 counting only the distinct ones).

The product of its digits is 15120000, while the sum is 54.

The spelling of 728613535545 in words is "seven hundred twenty-eight billion, six hundred thirteen million, five hundred thirty-five thousand, five hundred forty-five".