3947563636384 has 24 divisors (see below), whose sum is σ = 8022468037248. Its totient is φ = 1910111436480.

The previous prime is 3947563636343. The next prime is 3947563636403. The reversal of 3947563636384 is 4836363657493.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1989698422 + ... + 1989700405.

It is an arithmetic number, because the mean of its divisors is an integer number (334269501552).

Almost surely, 2^{3947563636384} is an apocalyptic number.

It is an amenable number.

3947563636384 is an abundant number, since it is smaller than the sum of its proper divisors (4074904400864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3947563636384 is a wasteful number, since it uses less digits than its factorization.

3947563636384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3979398868 (or 3979398860 counting only the distinct ones).

The product of its digits is 705438720, while the sum is 67.

The spelling of 3947563636384 in words is "three trillion, nine hundred forty-seven billion, five hundred sixty-three million, six hundred thirty-six thousand, three hundred eighty-four".