13541440009 has 2 divisors, whose sum is σ = 13541440010. Its totient is φ = 13541440008.

The previous prime is 13541439937. The next prime is 13541440013. The reversal of 13541440009 is 90004414531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13462496784 + 78943225 = 116028^2 + 8885^2 .

It is a cyclic number.

It is not a de Polignac number, because 13541440009 - 2²³ = 13533051401 is a prime.

It is a super-3 number, since 3×13541440009³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (13541440019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6770720004 + 6770720005.

It is an arithmetic number, because the mean of its divisors is an integer number (6770720005).

Almost surely, 2^13541440009 is an apocalyptic number.

It is an amenable number.

13541440009 is a deficient number, since it is larger than the sum of its proper divisors (1).

13541440009 is an equidigital number, since it uses as much as digits as its factorization.

13541440009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 13541440009 in words is "thirteen billion, five hundred forty-one million, four hundred forty thousand, nine".