13444446888888 has 64 divisors (see below), whose sum is σ = 33861569253120. Its totient is φ = 4448098579200.

The previous prime is 13444446888877. The next prime is 13444446888913. The reversal of 13444446888888 is 88888864444431.

It is a Cunningham number, because it is equal to 3666667²-1.

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21694453 + ... + 22305563.

It is an arithmetic number, because the mean of its divisors is an integer number (529087019580).

Almost surely, 2^{13444446888888} is an apocalyptic number.

It is an amenable number.

13444446888888 is an abundant number, since it is smaller than the sum of its proper divisors (20417122364232).

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

13444446888888 is a wasteful number, since it uses less digits than its factorization.

13444446888888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617948 (or 617944 counting only the distinct ones).

The product of its digits is 4831838208, while the sum is 78.

The spelling of 13444446888888 in words is "thirteen trillion, four hundred forty-four billion, four hundred forty-six million, eight hundred eighty-eight thousand, eight hundred eighty-eight".