728355634453 has 2 divisors, whose sum is σ = 728355634454. Its totient is φ = 728355634452.

The previous prime is 728355634441. The next prime is 728355634477. The reversal of 728355634453 is 354436553827.

728355634453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 556423499844 + 171932134609 = 745938^2 + 414647^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-728355634453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 728355634394 and 728355634403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728355634403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364177817226 + 364177817227.

It is an arithmetic number, because the mean of its divisors is an integer number (364177817227).

Almost surely, 2^728355634453 is an apocalyptic number.

It is an amenable number.

728355634453 is a deficient number, since it is larger than the sum of its proper divisors (1).

728355634453 is an equidigital number, since it uses as much as digits as its factorization.

728355634453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288000, while the sum is 55.

The spelling of 728355634453 in words is "seven hundred twenty-eight billion, three hundred fifty-five million, six hundred thirty-four thousand, four hundred fifty-three".