12630496631481 has 27 divisors (see below), whose sum is σ = 18339270710319. Its totient is φ = 8376610505472.

The previous prime is 12630496631437. The next prime is 12630496631483. The reversal of 12630496631481 is 18413669403621.

It is a happy number.

The square root of 12630496631481 is 3553941.

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

12630496631481 is a `hidden beast` number, since 1 + 2 + 6 + 3 + 0 + 496 + 6 + 3 + 148 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 105862383225 + 12524634248256 = 325365^2 + 3539016^2 .

It is not a de Polignac number, because 12630496631481 - 2⁷ = 12630496631353 is a prime.

It is a super-2 number, since 2×12630496631481² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12630496631483) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2121699801 + ... + 2121705753.

Almost surely, 2^{12630496631481} is an apocalyptic number.

12630496631481 is the 3553941-st square number.

12630496631481 is the 1776971-st centered octagonal number.

It is an amenable number.

12630496631481 is a deficient number, since it is larger than the sum of its proper divisors (5708774078838).

12630496631481 is an frugal number, since it uses more digits than its factorization.

12630496631481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12310 (or 6155 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 12630496631481 in words is "twelve trillion, six hundred thirty billion, four hundred ninety-six million, six hundred thirty-one thousand, four hundred eighty-one".