6366516255 has 48 divisors (see below), whose sum is σ = 12054107520. Its totient is φ = 3082795200.

The previous prime is 6366516251. The next prime is 6366516281. The reversal of 6366516255 is 5526156636.

6366516255 is a `hidden beast` number, since 636 + 6 + 5 + 1 + 6 + 2 + 5 + 5 = 666.

It is not a de Polignac number, because 6366516255 - 2² = 6366516251 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 6366516255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6366516251) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 393516 + ... + 409374.

It is an arithmetic number, because the mean of its divisors is an integer number (251127240).

Almost surely, 2^6366516255 is an apocalyptic number.

6366516255 is a deficient number, since it is larger than the sum of its proper divisors (5687591265).

6366516255 is a wasteful number, since it uses less digits than its factorization.

6366516255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16692 (or 16689 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

The square root of 6366516255 is about 79790.4521543775. The cubic root of 6366516255 is about 1853.3919999551.

The spelling of 6366516255 in words is "six billion, three hundred sixty-six million, five hundred sixteen thousand, two hundred fifty-five".