728464821901 has 2 divisors, whose sum is σ = 728464821902. Its totient is φ = 728464821900.

The previous prime is 728464821869. The next prime is 728464821907. The reversal of 728464821901 is 109128464827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 728463957001 + 864900 = 853501^2 + 930^2 .

It is a cyclic number.

It is not a de Polignac number, because 728464821901 - 2⁵ = 728464821869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728464821907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364232410950 + 364232410951.

It is an arithmetic number, because the mean of its divisors is an integer number (364232410951).

Almost surely, 2^728464821901 is an apocalyptic number.

It is an amenable number.

728464821901 is a deficient number, since it is larger than the sum of its proper divisors (1).

728464821901 is an equidigital number, since it uses as much as digits as its factorization.

728464821901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 728464821901 in words is "seven hundred twenty-eight billion, four hundred sixty-four million, eight hundred twenty-one thousand, nine hundred one".