6463665955 has 16 divisors (see below), whose sum is σ = 8183538720. Its totient is φ = 4887433728.

The previous prime is 6463665869. The next prime is 6463665961. The reversal of 6463665955 is 5595663646.

It is a cyclic number.

It is not a de Polignac number, because 6463665955 - 2¹¹ = 6463663907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6463665896 and 6463665905.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37432 + ... + 119701.

It is an arithmetic number, because the mean of its divisors is an integer number (511471170).

Almost surely, 2^6463665955 is an apocalyptic number.

6463665955 is a deficient number, since it is larger than the sum of its proper divisors (1719872765).

6463665955 is a wasteful number, since it uses less digits than its factorization.

6463665955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157590.

The product of its digits is 17496000, while the sum is 55.

The square root of 6463665955 is about 80396.9275221386. The cubic root of 6463665955 is about 1862.7717140634.

The spelling of 6463665955 in words is "six billion, four hundred sixty-three million, six hundred sixty-five thousand, nine hundred fifty-five".