481328488521 has 24 divisors (see below), whose sum is σ = 698341821320. Its totient is φ = 319461636096.

The previous prime is 481328488519. The next prime is 481328488549. The reversal of 481328488521 is 125884823184.

481328488521 is a `hidden beast` number, since 4 + 8 + 1 + 32 + 8 + 4 + 88 + 521 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 74386562121 + 406941926400 = 272739^2 + 637920^2 .

It is not a de Polignac number, because 481328488521 - 2¹ = 481328488519 is a prime.

It is a super-2 number, since 2×481328488521² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (481321488521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2944425 + ... + 3103593.

Almost surely, 2^481328488521 is an apocalyptic number.

It is an amenable number.

481328488521 is a deficient number, since it is larger than the sum of its proper divisors (217013332799).

481328488521 is a wasteful number, since it uses less digits than its factorization.

481328488521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160665 (or 160662 counting only the distinct ones).

The product of its digits is 3932160, while the sum is 54.

The spelling of 481328488521 in words is "four hundred eighty-one billion, three hundred twenty-eight million, four hundred eighty-eight thousand, five hundred twenty-one".