6363881361 has 12 divisors (see below), whose sum is σ = 9318195588. Its totient is φ = 4184469504.

The previous prime is 6363881353. The next prime is 6363881369. The reversal of 6363881361 is 1631883636.

6363881361 is a `hidden beast` number, since 6 + 3 + 638 + 8 + 1 + 3 + 6 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (6363881353) and next prime (6363881369).

It can be written as a sum of positive squares in 2 ways, for example, as 5120261136 + 1243620225 = 71556^2 + 35265^2 .

It is not a de Polignac number, because 6363881361 - 2³ = 6363881353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6363881369) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4842480 + ... + 4843793.

It is an arithmetic number, because the mean of its divisors is an integer number (776516299).

Almost surely, 2^6363881361 is an apocalyptic number.

It is an amenable number.

6363881361 is a deficient number, since it is larger than the sum of its proper divisors (2954314227).

6363881361 is a wasteful number, since it uses less digits than its factorization.

6363881361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9686352 (or 9686349 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 6363881361 is about 79773.9391092103. The cubic root of 6363881361 is about 1853.1362784519.

The spelling of 6363881361 in words is "six billion, three hundred sixty-three million, eight hundred eighty-one thousand, three hundred sixty-one".