3968214642856 has 8 divisors (see below), whose sum is σ = 7440402455370. Its totient is φ = 1984107321424.

The previous prime is 3968214642839. The next prime is 3968214642859. The reversal of 3968214642856 is 6582464128693.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3489536080900 + 478678561956 = 1868030^2 + 691866^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (3968214642859) by changing a digit.

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 as a sum of consecutive naturals, namely, 248013415171 + ... + 248013415186.

Almost surely, 2^{3968214642856} is an apocalyptic number.

It is an amenable number.

3968214642856 is a deficient number, since it is larger than the sum of its proper divisors (3472187812514).

3968214642856 is a wasteful number, since it uses less digits than its factorization.

3968214642856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496026830363 (or 496026830359 counting only the distinct ones).

The product of its digits is 119439360, while the sum is 64.

The spelling of 3968214642856 in words is "three trillion, nine hundred sixty-eight billion, two hundred fourteen million, six hundred forty-two thousand, eight hundred fifty-six".