3644476963648 has 28 divisors (see below), whose sum is σ = 7232999369380. Its totient is φ = 1821988933632.

The previous prime is 3644476963643. The next prime is 3644476963661. The reversal of 3644476963648 is 8463696744463.

It can be written as a sum of positive squares in 2 ways, for example, as 836332198144 + 2808144765504 = 914512^2 + 1675752^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644476963643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3427761 + ... + 4363312.

Almost surely, 2^{3644476963648} is an apocalyptic number.

It is an amenable number.

3644476963648 is a deficient number, since it is larger than the sum of its proper divisors (3588522405732).

3644476963648 is an equidigital number, since it uses as much as digits as its factorization.

3644476963648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7798394 (or 7798384 counting only the distinct ones).

The product of its digits is 1504935936, while the sum is 70.

The spelling of 3644476963648 in words is "three trillion, six hundred forty-four billion, four hundred seventy-six million, nine hundred sixty-three thousand, six hundred forty-eight".