727508349481 has 27 divisors (see below), whose sum is σ = 780803350423. Its totient is φ = 677712800960.

The previous prime is 727508349457. The next prime is 727508349487. The reversal of 727508349481 is 184943805727.

The square root of 727508349481 is 852941.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 566399234025 + 161109115456 = 752595^2 + 401384^2 .

It is not a de Polignac number, because 727508349481 - 2⁹ = 727508348969 is a prime.

It is a super-2 number, since 2×727508349481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (727508349487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1899499416 + ... + 1899499798.

Almost surely, 2^727508349481 is an apocalyptic number.

727508349481 is the 852941-st square number.

727508349481 is the 426471-st centered octagonal number.

It is an amenable number.

727508349481 is a deficient number, since it is larger than the sum of its proper divisors (53295000942).

727508349481 is an frugal number, since it uses more digits than its factorization.

727508349481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 58.

The spelling of 727508349481 in words is "seven hundred twenty-seven billion, five hundred eight million, three hundred forty-nine thousand, four hundred eighty-one".