12354535909 has 2 divisors, whose sum is σ = 12354535910. Its totient is φ = 12354535908.

The previous prime is 12354535883. The next prime is 12354535913. The reversal of 12354535909 is 90953545321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11385957025 + 968578884 = 106705^2 + 31122^2 .

It is a cyclic number.

It is not a de Polignac number, because 12354535909 - 2¹⁷ = 12354404837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12354533909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6177267954 + 6177267955.

It is an arithmetic number, because the mean of its divisors is an integer number (6177267955).

Almost surely, 2^12354535909 is an apocalyptic number.

It is an amenable number.

12354535909 is a deficient number, since it is larger than the sum of its proper divisors (1).

12354535909 is an equidigital number, since it uses as much as digits as its factorization.

12354535909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729000, while the sum is 46.

The spelling of 12354535909 in words is "twelve billion, three hundred fifty-four million, five hundred thirty-five thousand, nine hundred nine".