63281930481 has 147 divisors (see below), whose sum is σ = 121407017817. Its totient is φ = 32873730120.

The previous prime is 63281930471. The next prime is 63281930513. The reversal of 63281930481 is 18403918236.

The square root of 63281930481 is 251559.

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

63281930481 is a `hidden beast` number, since 6 + 3 + 2 + 81 + 93 + 0 + 481 = 666.

It is a tau number, because it is divible by the number of its divisors (147).

It is not a de Polignac number, because 63281930481 - 2⁷ = 63281930353 is a prime.

It is a super-2 number, since 2×63281930481² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63281930471) by changing a digit.

It is a polite number, since it can be written in 146 ways as a sum of consecutive naturals, for example, 5752902766 + ... + 5752902776.

Almost surely, 2^63281930481 is an apocalyptic number.

63281930481 is the 251559-th square number.

63281930481 is the 125780-th centered octagonal number.

It is an amenable number.

63281930481 is a deficient number, since it is larger than the sum of its proper divisors (58125087336).

63281930481 is an frugal number, since it uses more digits than its factorization.

63281930481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 21 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 63281930481 in words is "sixty-three billion, two hundred eighty-one million, nine hundred thirty thousand, four hundred eighty-one".