22144426545671 has 4 divisors (see below), whose sum is σ = 22164612897312. Its totient is φ = 22124240194032.

The previous prime is 22144426545583. The next prime is 22144426545697. The reversal of 22144426545671 is 17654562444122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22144426545671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22144426545971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10093174175 + ... + 10093176368.

It is an arithmetic number, because the mean of its divisors is an integer number (5541153224328).

Almost surely, 2^{22144426545671} is an apocalyptic number.

22144426545671 is a deficient number, since it is larger than the sum of its proper divisors (20186351641).

22144426545671 is a wasteful number, since it uses less digits than its factorization.

22144426545671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20186351640.

The product of its digits is 12902400, while the sum is 53.

Adding to 22144426545671 its reverse (17654562444122), we get a palindrome (39798988989793).

The spelling of 22144426545671 in words is "twenty-two trillion, one hundred forty-four billion, four hundred twenty-six million, five hundred forty-five thousand, six hundred seventy-one".