6363636443 has 4 divisors (see below), whose sum is σ = 6364024920. Its totient is φ = 6363247968.

The previous prime is 6363636421. The next prime is 6363636451. The reversal of 6363636443 is 3446363636.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6363636443 - 2⁶ = 6363636379 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6363636394 and 6363636403.

It is not an unprimeable number, because it can be changed into a prime (6363636413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168533 + ... + 202806.

It is an arithmetic number, because the mean of its divisors is an integer number (1591006230).

Almost surely, 2^6363636443 is an apocalyptic number.

6363636443 is a deficient number, since it is larger than the sum of its proper divisors (388477).

6363636443 is a wasteful number, since it uses less digits than its factorization.

6363636443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388476.

The product of its digits is 1679616, while the sum is 44.

The square root of 6363636443 is about 79772.4040191845. The cubic root of 6363636443 is about 1853.1125051062.

The spelling of 6363636443 in words is "six billion, three hundred sixty-three million, six hundred thirty-six thousand, four hundred forty-three".