12444881827 has 4 divisors (see below), whose sum is σ = 14222722096. Its totient is φ = 10667041560.

The previous prime is 12444881821. The next prime is 12444881861. The reversal of 12444881827 is 72818844421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72818844421 = 19 ⋅3832570759.

It is not a de Polignac number, because 12444881827 - 2¹¹ = 12444879779 is a prime.

It is a super-3 number, since 3×12444881827³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12444881821) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 888920124 + ... + 888920137.

It is an arithmetic number, because the mean of its divisors is an integer number (3555680524).

Almost surely, 2^12444881827 is an apocalyptic number.

12444881827 is a deficient number, since it is larger than the sum of its proper divisors (1777840269).

12444881827 is an equidigital number, since it uses as much as digits as its factorization.

12444881827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777840268.

The product of its digits is 917504, while the sum is 49.

The spelling of 12444881827 in words is "twelve billion, four hundred forty-four million, eight hundred eighty-one thousand, eight hundred twenty-seven".