485587379281 has 9 divisors (see below), whose sum is σ = 502930094641. Its totient is φ = 468823475344.

The previous prime is 485587379243. The next prime is 485587379287. The reversal of 485587379281 is 182973785584.

The square root of 485587379281 is 696841.

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

It can be written as a sum of positive squares in 4 ways, for example, as 242104345681 + 243483033600 = 492041^2 + 493440^2 .

It is not a de Polignac number, because 485587379281 - 2⁷ = 485587379153 is a prime.

It is a super-2 number, since 2×485587379281² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (485587379287) 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 8 ways as a sum of consecutive naturals, for example, 20196375 + ... + 20220403.

Almost surely, 2^485587379281 is an apocalyptic number.

485587379281 is the 696841-st square number.

485587379281 is the 348421-st centered octagonal number.

It is an amenable number.

485587379281 is a deficient number, since it is larger than the sum of its proper divisors (17342715360).

485587379281 is an frugal number, since it uses more digits than its factorization.

485587379281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48116 (or 24058 counting only the distinct ones).

The product of its digits is 135475200, while the sum is 67.

The spelling of 485587379281 in words is "four hundred eighty-five billion, five hundred eighty-seven million, three hundred seventy-nine thousand, two hundred eighty-one".