3644121484871 has 4 divisors (see below), whose sum is σ = 4164710268432. Its totient is φ = 3123532701312.

The previous prime is 3644121484859. The next prime is 3644121484877. The reversal of 3644121484871 is 1784841214463.

It is a happy number.

3644121484871 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3644121484871 - 2⁶ = 3644121484807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644121484877) 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 3 ways as a sum of consecutive naturals, for example, 260294391770 + ... + 260294391783.

It is an arithmetic number, because the mean of its divisors is an integer number (1041177567108).

Almost surely, 2^{3644121484871} is an apocalyptic number.

3644121484871 is a deficient number, since it is larger than the sum of its proper divisors (520588783561).

3644121484871 is an equidigital number, since it uses as much as digits as its factorization.

3644121484871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520588783560.

The product of its digits is 4128768, while the sum is 53.

The spelling of 3644121484871 in words is "three trillion, six hundred forty-four billion, one hundred twenty-one million, four hundred eighty-four thousand, eight hundred seventy-one".