2011444255445 has 4 divisors (see below), whose sum is σ = 2413733106540. Its totient is φ = 1609155404352.

The previous prime is 2011444255441. The next prime is 2011444255477. The reversal of 2011444255445 is 5445524441102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 923457575089 + 1087986680356 = 960967^2 + 1043066^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011444255445 - 2² = 2011444255441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011444255441) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 201144425540 + ... + 201144425549.

It is an arithmetic number, because the mean of its divisors is an integer number (603433276635).

Almost surely, 2^{2011444255445} is an apocalyptic number.

It is an amenable number.

2011444255445 is a deficient number, since it is larger than the sum of its proper divisors (402288851095).

2011444255445 is an equidigital number, since it uses as much as digits as its factorization.

2011444255445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402288851094.

The product of its (nonzero) digits is 512000, while the sum is 41.

Adding to 2011444255445 its reverse (5445524441102), we get a palindrome (7456968696547).

The spelling of 2011444255445 in words is "two trillion, eleven billion, four hundred forty-four million, two hundred fifty-five thousand, four hundred forty-five".