12648181801 has 4 divisors (see below), whose sum is σ = 13313875600. Its totient is φ = 11982488004.

The previous prime is 12648181757. The next prime is 12648181859. The reversal of 12648181801 is 10818184621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12648181801 - 2⁹ = 12648181289 is a prime.

It is a super-2 number, since 2×12648181801² (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 (12648181001) 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, 332846871 + ... + 332846908.

It is an arithmetic number, because the mean of its divisors is an integer number (3328468900).

Almost surely, 2^12648181801 is an apocalyptic number.

It is an amenable number.

12648181801 is a deficient number, since it is larger than the sum of its proper divisors (665693799).

12648181801 is an equidigital number, since it uses as much as digits as its factorization.

12648181801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665693798.

The product of its (nonzero) digits is 24576, while the sum is 40.

The spelling of 12648181801 in words is "twelve billion, six hundred forty-eight million, one hundred eighty-one thousand, eight hundred one".