3644120960728 has 32 divisors (see below), whose sum is σ = 6978489764400. Its totient is φ = 1783593157248.

The previous prime is 3644120960713. The next prime is 3644120960729. The reversal of 3644120960728 is 8270690214463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644120960729) 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 in 7 ways as a sum of consecutive naturals, for example, 25102551 + ... + 25247302.

Almost surely, 2^{3644120960728} is an apocalyptic number.

It is an amenable number.

3644120960728 is a deficient number, since it is larger than the sum of its proper divisors (3334368803672).

3644120960728 is a wasteful number, since it uses less digits than its factorization.

3644120960728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50350051 (or 50350047 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 3644120960728 in words is "three trillion, six hundred forty-four billion, one hundred twenty million, nine hundred sixty thousand, seven hundred twenty-eight".