2271722516447 has 4 divisors (see below), whose sum is σ = 2285325645456. Its totient is φ = 2258119387440.

The previous prime is 2271722516419. The next prime is 2271722516467. The reversal of 2271722516447 is 7446152271722.

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

It is a cyclic number.

It is not a de Polignac number, because 2271722516447 - 2²⁰ = 2271721467871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2271722516395 and 2271722516404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2271722516467) 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, 6801564254 + ... + 6801564587.

It is an arithmetic number, because the mean of its divisors is an integer number (571331411364).

Almost surely, 2^{2271722516447} is an apocalyptic number.

2271722516447 is a deficient number, since it is larger than the sum of its proper divisors (13603129009).

2271722516447 is a wasteful number, since it uses less digits than its factorization.

2271722516447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13603129008.

The product of its digits is 2634240, while the sum is 50.

The spelling of 2271722516447 in words is "two trillion, two hundred seventy-one billion, seven hundred twenty-two million, five hundred sixteen thousand, four hundred forty-seven".