12630443531 has 4 divisors (see below), whose sum is σ = 12631056552. Its totient is φ = 12629830512.

The previous prime is 12630443521. The next prime is 12630443533. The reversal of 12630443531 is 13534403621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13534403621 = 8017 ⋅1688213.

It is a cyclic number.

It is not a de Polignac number, because 12630443531 - 2¹⁸ = 12630181387 is a prime.

It is a super-2 number, since 2×12630443531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12630443533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274490 + ... + 317183.

It is an arithmetic number, because the mean of its divisors is an integer number (3157764138).

Almost surely, 2^12630443531 is an apocalyptic number.

12630443531 is a deficient number, since it is larger than the sum of its proper divisors (613021).

12630443531 is an equidigital number, since it uses as much as digits as its factorization.

12630443531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613020.

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 12630443531 in words is "twelve billion, six hundred thirty million, four hundred forty-three thousand, five hundred thirty-one".