12663542531 has 8 divisors (see below), whose sum is σ = 12986147664. Its totient is φ = 12341591680.

The previous prime is 12663542519. The next prime is 12663542533. The reversal of 12663542531 is 13524536621.

12663542531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12663542531 - 2¹⁸ = 12663280387 is a prime.

It is a super-2 number, since 2×12663542531² (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 (12663542533) 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 7 ways as a sum of consecutive naturals, for example, 124250 + ... + 201903.

It is an arithmetic number, because the mean of its divisors is an integer number (1623268458).

Almost surely, 2^12663542531 is an apocalyptic number.

12663542531 is a deficient number, since it is larger than the sum of its proper divisors (322605133).

12663542531 is an equidigital number, since it uses as much as digits as its factorization.

12663542531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327141.

The product of its digits is 129600, while the sum is 38.

The spelling of 12663542531 in words is "twelve billion, six hundred sixty-three million, five hundred forty-two thousand, five hundred thirty-one".