13140232105409 has 4 divisors (see below), whose sum is σ = 13140834807216. Its totient is φ = 13139629403604.

The previous prime is 13140232105387. The next prime is 13140232105433. The reversal of 13140232105409 is 90450123204131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13140232105409 - 2⁸ = 13140232105153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13140232105439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301318199 + ... + 301361804.

It is an arithmetic number, because the mean of its divisors is an integer number (3285208701804).

Almost surely, 2^{13140232105409} is an apocalyptic number.

It is an amenable number.

13140232105409 is a deficient number, since it is larger than the sum of its proper divisors (602701807).

13140232105409 is an equidigital number, since it uses as much as digits as its factorization.

13140232105409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602701806.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 13140232105409 in words is "thirteen trillion, one hundred forty billion, two hundred thirty-two million, one hundred five thousand, four hundred nine".