6395972663 has 2 divisors, whose sum is σ = 6395972664. Its totient is φ = 6395972662.

The previous prime is 6395972647. The next prime is 6395972719. The reversal of 6395972663 is 3662795936.

It is an a-pointer prime, because the next prime (6395972719) can be obtained adding 6395972663 to its sum of digits (56).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6395972663 - 2⁴ = 6395972647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6395972599 and 6395972608.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3197986331 + 3197986332.

It is an arithmetic number, because the mean of its divisors is an integer number (3197986332).

Almost surely, 2^6395972663 is an apocalyptic number.

6395972663 is a deficient number, since it is larger than the sum of its proper divisors (1).

6395972663 is an equidigital number, since it uses as much as digits as its factorization.

6395972663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11022480, while the sum is 56.

The square root of 6395972663 is about 79974.8251826786. The cubic root of 6395972663 is about 1856.2460091772.

The spelling of 6395972663 in words is "six billion, three hundred ninety-five million, nine hundred seventy-two thousand, six hundred sixty-three".