3644121485016 has 80 divisors (see below), whose sum is σ = 10248918550200. Its totient is φ = 1214707109184.

The previous prime is 3644121484877. The next prime is 3644121485021. The reversal of 3644121485016 is 6105841214463.

3644121485016 is a `hidden beast` number, since 3 + 6 + 44 + 121 + 485 + 0 + 1 + 6 = 666.

It is a super-2 number, since 2×3644121485016² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

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 in 19 ways as a sum of consecutive naturals, for example, 11413821 + ... + 11728748.

Almost surely, 2^{3644121485016} is an apocalyptic number.

3644121485016 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3644121485016 is an abundant number, since it is smaller than the sum of its proper divisors (6604797065184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3644121485016 is an frugal number, since it uses more digits than its factorization.

3644121485016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23142602 (or 23142574 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

Adding to 3644121485016 its reverse (6105841214463), we get a palindrome (9749962699479).

The spelling of 3644121485016 in words is "three trillion, six hundred forty-four billion, one hundred twenty-one million, four hundred eighty-five thousand, sixteen".