13530040109 has 2 divisors, whose sum is σ = 13530040110. Its totient is φ = 13530040108.

The previous prime is 13530040091. The next prime is 13530040159. The reversal of 13530040109 is 90104003531.

Together with previous prime (13530040091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12336544900 + 1193495209 = 111070^2 + 34547^2 .

It is a cyclic number.

It is not a de Polignac number, because 13530040109 - 2²⁰ = 13528991533 is a prime.

It is a super-2 number, since 2×13530040109² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13530040159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765020054 + 6765020055.

It is an arithmetic number, because the mean of its divisors is an integer number (6765020055).

Almost surely, 2^13530040109 is an apocalyptic number.

It is an amenable number.

13530040109 is a deficient number, since it is larger than the sum of its proper divisors (1).

13530040109 is an equidigital number, since it uses as much as digits as its factorization.

13530040109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The spelling of 13530040109 in words is "thirteen billion, five hundred thirty million, forty thousand, one hundred nine".