6516454565 has 16 divisors (see below), whose sum is σ = 8014214208. Its totient is φ = 5083900416.

The previous prime is 6516454561. The next prime is 6516454589. The reversal of 6516454565 is 5654546156.

It is a cyclic number.

It is not a de Polignac number, because 6516454565 - 2² = 6516454561 is a prime.

It is a Smith number, since the sum of its digits (47) 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6516454561) 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, 114677 + ... + 161813.

It is an arithmetic number, because the mean of its divisors is an integer number (500888388).

Almost surely, 2^6516454565 is an apocalyptic number.

It is an amenable number.

6516454565 is a deficient number, since it is larger than the sum of its proper divisors (1497759643).

6516454565 is a wasteful number, since it uses less digits than its factorization.

6516454565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47828.

The product of its digits is 2160000, while the sum is 47.

The square root of 6516454565 is about 80724.5598625350. The cubic root of 6516454565 is about 1867.8290423882.

The spelling of 6516454565 in words is "six billion, five hundred sixteen million, four hundred fifty-four thousand, five hundred sixty-five".