14121515209 has 2 divisors, whose sum is σ = 14121515210. Its totient is φ = 14121515208.

The previous prime is 14121515131. The next prime is 14121515227. The reversal of 14121515209 is 90251512141.

14121515209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13689000000 + 432515209 = 117000^2 + 20797^2 .

It is a cyclic number.

It is not a de Polignac number, because 14121515209 - 2⁹ = 14121514697 is a prime.

It is not a weakly prime, because it can be changed into another prime (14121515509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7060757604 + 7060757605.

It is an arithmetic number, because the mean of its divisors is an integer number (7060757605).

Almost surely, 2^14121515209 is an apocalyptic number.

It is an amenable number.

14121515209 is a deficient number, since it is larger than the sum of its proper divisors (1).

14121515209 is an equidigital number, since it uses as much as digits as its factorization.

14121515209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 31.

The spelling of 14121515209 in words is "fourteen billion, one hundred twenty-one million, five hundred fifteen thousand, two hundred nine".