14223512561 has 2 divisors, whose sum is σ = 14223512562. Its totient is φ = 14223512560.

The previous prime is 14223512551. The next prime is 14223512623. The reversal of 14223512561 is 16521532241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14153622961 + 69889600 = 118969^2 + 8360^2 .

It is a cyclic number.

It is not a de Polignac number, because 14223512561 - 2¹⁸ = 14223250417 is a prime.

It is not a weakly prime, because it can be changed into another prime (14223512551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7111756280 + 7111756281.

It is an arithmetic number, because the mean of its divisors is an integer number (7111756281).

Almost surely, 2^14223512561 is an apocalyptic number.

It is an amenable number.

14223512561 is a deficient number, since it is larger than the sum of its proper divisors (1).

14223512561 is an equidigital number, since it uses as much as digits as its factorization.

14223512561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 32.

The spelling of 14223512561 in words is "fourteen billion, two hundred twenty-three million, five hundred twelve thousand, five hundred sixty-one".