12468886421 has 18 divisors (see below), whose sum is σ = 12954764898. Its totient is φ = 11999880000.

The previous prime is 12468886403. The next prime is 12468886471.

12468886421 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 3 ways, for example, as 183602500 + 12285283921 = 13550^2 + 110839^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12468886421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12468886421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12468886471) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 46010516 + ... + 46010786.

It is an arithmetic number, because the mean of its divisors is an integer number (719709161).

Almost surely, 2^12468886421 is an apocalyptic number.

It is an amenable number.

12468886421 is a deficient number, since it is larger than the sum of its proper divisors (485878477).

12468886421 is an frugal number, since it uses more digits than its factorization.

12468886421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725 (or 413 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 50.

The spelling of 12468886421 in words is "twelve billion, four hundred sixty-eight million, eight hundred eighty-six thousand, four hundred twenty-one".