6366216465 has 120 divisors (see below), whose sum is σ = 13370524200. Its totient is φ = 2889395712.

The previous prime is 6366216433. The next prime is 6366216469. The reversal of 6366216465 is 5646126636.

6366216465 is a `hidden beast` number, since 636 + 6 + 2 + 1 + 6 + 4 + 6 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 144793089 + 6221423376 = 12033^2 + 78876^2 .

It is not a de Polignac number, because 6366216465 - 2⁵ = 6366216433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 6366216465.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6366216469) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 2955829 + ... + 2957981.

It is an arithmetic number, because the mean of its divisors is an integer number (111421035).

Almost surely, 2^6366216465 is an apocalyptic number.

It is an amenable number.

6366216465 is an abundant number, since it is smaller than the sum of its proper divisors (7004307735).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6366216465 is a wasteful number, since it uses less digits than its factorization.

6366216465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333 (or 2317 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The square root of 6366216465 is about 79788.5735240329. The cubic root of 6366216465 is about 1853.3629083197.

The spelling of 6366216465 in words is "six billion, three hundred sixty-six million, two hundred sixteen thousand, four hundred sixty-five".