3644121485018 has 128 divisors (see below), whose sum is σ = 6975344471040. Its totient is φ = 1391111884800.

The previous prime is 3644121484877. The next prime is 3644121485021. The reversal of 3644121485018 is 8105841214463.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 461218868 + ... + 461226768.

It is an arithmetic number, because the mean of its divisors is an integer number (54494878680).

Almost surely, 2^{3644121485018} is an apocalyptic number.

3644121485018 is a deficient number, since it is larger than the sum of its proper divisors (3331222986022).

3644121485018 is a wasteful number, since it uses less digits than its factorization.

3644121485018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8832.

The product of its (nonzero) digits is 737280, while the sum is 47.

The spelling of 3644121485018 in words is "three trillion, six hundred forty-four billion, one hundred twenty-one million, four hundred eighty-five thousand, eighteen".