6381979482563 has 8 divisors (see below), whose sum is σ = 6717926323920. Its totient is φ = 6046037959680.

The previous prime is 6381979482533. The next prime is 6381979482577. The reversal of 6381979482563 is 3652849791836.

It is a Cunningham number, because it is equal to 2526258²-1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6381979482563 - 2⁶ = 6381979482499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6381979482533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1263131 + ... + 3789387.

It is an arithmetic number, because the mean of its divisors is an integer number (839740790490).

Almost surely, 2^{6381979482563} is an apocalyptic number.

6381979482563 is a deficient number, since it is larger than the sum of its proper divisors (335946841357).

6381979482563 is a wasteful number, since it uses less digits than its factorization.

6381979482563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659237.

The product of its digits is 470292480, while the sum is 71.

The spelling of 6381979482563 in words is "six trillion, three hundred eighty-one billion, nine hundred seventy-nine million, four hundred eighty-two thousand, five hundred sixty-three".