12900381443 has 4 divisors (see below), whose sum is σ = 13111863168. Its totient is φ = 12688899720.

The previous prime is 12900381421. The next prime is 12900381463. The reversal of 12900381443 is 34418300921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34418300921 = 14107 ⋅2439803.

It is a cyclic number.

It is not a de Polignac number, because 12900381443 - 2¹⁴ = 12900365059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12900381413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105740771 + ... + 105740892.

It is an arithmetic number, because the mean of its divisors is an integer number (3277965792).

Almost surely, 2^12900381443 is an apocalyptic number.

12900381443 is a deficient number, since it is larger than the sum of its proper divisors (211481725).

12900381443 is an equidigital number, since it uses as much as digits as its factorization.

12900381443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211481724.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 12900381443 in words is "twelve billion, nine hundred million, three hundred eighty-one thousand, four hundred forty-three".