22345661447 has 2 divisors, whose sum is σ = 22345661448. Its totient is φ = 22345661446.

The previous prime is 22345661419. The next prime is 22345661449. The reversal of 22345661447 is 74416654322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22345661447 - 2¹⁰ = 22345660423 is a prime.

Together with 22345661449, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22345661398 and 22345661407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22345661449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11172830723 + 11172830724.

It is an arithmetic number, because the mean of its divisors is an integer number (11172830724).

Almost surely, 2^22345661447 is an apocalyptic number.

22345661447 is a deficient number, since it is larger than the sum of its proper divisors (1).

22345661447 is an equidigital number, since it uses as much as digits as its factorization.

22345661447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 44.

The spelling of 22345661447 in words is "twenty-two billion, three hundred forty-five million, six hundred sixty-one thousand, four hundred forty-seven".