5181188407609 has 4 divisors (see below), whose sum is σ = 5183871572880. Its totient is φ = 5178505242340.

The previous prime is 5181188407579. The next prime is 5181188407631. The reversal of 5181188407609 is 9067048811815.

5181188407609 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5181188407609 - 2²⁵ = 5181154853177 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5181188447609) 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, 1341579739 + ... + 1341583600.

It is an arithmetic number, because the mean of its divisors is an integer number (1295967893220).

Almost surely, 2^{5181188407609} is an apocalyptic number.

It is an amenable number.

5181188407609 is a deficient number, since it is larger than the sum of its proper divisors (2683165271).

5181188407609 is a wasteful number, since it uses less digits than its factorization.

5181188407609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2683165270.

The product of its (nonzero) digits is 3870720, while the sum is 58.

The spelling of 5181188407609 in words is "five trillion, one hundred eighty-one billion, one hundred eighty-eight million, four hundred seven thousand, six hundred nine".