6551316545 has 16 divisors (see below), whose sum is σ = 7946595072. Its totient is φ = 5184488640.

The previous prime is 6551316509. The next prime is 6551316547. The reversal of 6551316545 is 5456131556.

It is not a de Polignac number, because 6551316545 - 2¹⁰ = 6551315521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6551316547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 499775 + ... + 512715.

It is an arithmetic number, because the mean of its divisors is an integer number (496662192).

Almost surely, 2^6551316545 is an apocalyptic number.

It is an amenable number.

6551316545 is a deficient number, since it is larger than the sum of its proper divisors (1395278527).

6551316545 is a wasteful number, since it uses less digits than its factorization.

6551316545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14032.

The product of its digits is 270000, while the sum is 41.

The square root of 6551316545 is about 80940.2035146935. The cubic root of 6551316545 is about 1871.1539814099.

The spelling of 6551316545 in words is "six billion, five hundred fifty-one million, three hundred sixteen thousand, five hundred forty-five".