13534809240109 has 2 divisors, whose sum is σ = 13534809240110. Its totient is φ = 13534809240108.

The previous prime is 13534809240077. The next prime is 13534809240229. The reversal of 13534809240109 is 90104290843531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13532061174025 + 2748066084 = 3678595^2 + 52422^2 .

It is a cyclic number.

It is not a de Polignac number, because 13534809240109 - 2⁵ = 13534809240077 is a prime.

It is a super-2 number, since 2×13534809240109² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13534809246109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6767404620054 + 6767404620055.

It is an arithmetic number, because the mean of its divisors is an integer number (6767404620055).

Almost surely, 2^{13534809240109} is an apocalyptic number.

It is an amenable number.

13534809240109 is a deficient number, since it is larger than the sum of its proper divisors (1).

13534809240109 is an equidigital number, since it uses as much as digits as its factorization.

13534809240109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 13534809240109 in words is "thirteen trillion, five hundred thirty-four billion, eight hundred nine million, two hundred forty thousand, one hundred nine".