5511218509 has 8 divisors (see below), whose sum is σ = 5604070752. Its totient is φ = 5418996240.

The previous prime is 5511218507. The next prime is 5511218513. The reversal of 5511218509 is 9058121155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5511218509 - 2¹ = 5511218507 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5511218507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139834 + ... + 174859.

It is an arithmetic number, because the mean of its divisors is an integer number (700508844).

Almost surely, 2^5511218509 is an apocalyptic number.

It is an amenable number.

5511218509 is a deficient number, since it is larger than the sum of its proper divisors (92852243).

5511218509 is a wasteful number, since it uses less digits than its factorization.

5511218509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314987.

The product of its (nonzero) digits is 18000, while the sum is 37.

The square root of 5511218509 is about 74237.5815136781. The cubic root of 5511218509 is about 1766.3735115133.

The spelling of 5511218509 in words is "five billion, five hundred eleven million, two hundred eighteen thousand, five hundred nine".