12811841292 has 24 divisors (see below), whose sum is σ = 29999937856. Its totient is φ = 4255522128.

The previous prime is 12811841279. The next prime is 12811841309. The reversal of 12811841292 is 29214811821.

It is a self number, because there is not a number n which added to its sum of digits gives 12811841292.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1882918 + ... + 1889709.

Almost surely, 2^12811841292 is an apocalyptic number.

12811841292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12811841292 is an abundant number, since it is smaller than the sum of its proper divisors (17188096564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12811841292 is a wasteful number, since it uses less digits than its factorization.

12811841292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3772917 (or 3772915 counting only the distinct ones).

The product of its digits is 18432, while the sum is 39.

The spelling of 12811841292 in words is "twelve billion, eight hundred eleven million, eight hundred forty-one thousand, two hundred ninety-two".