13423551450109 has 2 divisors, whose sum is σ = 13423551450110. Its totient is φ = 13423551450108.

The previous prime is 13423551450107. The next prime is 13423551450131. The reversal of 13423551450109 is 90105415532431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13369648541209 + 53902908900 = 3656453^2 + 232170^2 .

It is a cyclic number.

It is not a de Polignac number, because 13423551450109 - 2¹ = 13423551450107 is a prime.

It is a super-2 number, since 2×13423551450109² (a number of 27 digits) contains 22 as substring.

Together with 13423551450107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13423551450107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6711775725054 + 6711775725055.

It is an arithmetic number, because the mean of its divisors is an integer number (6711775725055).

Almost surely, 2^{13423551450109} is an apocalyptic number.

It is an amenable number.

13423551450109 is a deficient number, since it is larger than the sum of its proper divisors (1).

13423551450109 is an equidigital number, since it uses as much as digits as its factorization.

13423551450109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 13423551450109 in words is "thirteen trillion, four hundred twenty-three billion, five hundred fifty-one million, four hundred fifty thousand, one hundred nine".