3936557633896 has 8 divisors (see below), whose sum is σ = 7381045563570. Its totient is φ = 1968278816944.

The previous prime is 3936557633867. The next prime is 3936557633963. The reversal of 3936557633896 is 6983367556393.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3208289968900 + 728267664996 = 1791170^2 + 853386^2 .

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

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 as a sum of consecutive naturals, namely, 246034852111 + ... + 246034852126.

Almost surely, 2^{3936557633896} is an apocalyptic number.

It is an amenable number.

3936557633896 is a deficient number, since it is larger than the sum of its proper divisors (3444487929674).

3936557633896 is a wasteful number, since it uses less digits than its factorization.

3936557633896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492069704243 (or 492069704239 counting only the distinct ones).

The product of its digits is 1984046400, while the sum is 73.

The spelling of 3936557633896 in words is "three trillion, nine hundred thirty-six billion, five hundred fifty-seven million, six hundred thirty-three thousand, eight hundred ninety-six".