3644440145652 has 24 divisors (see below), whose sum is σ = 8503840567936. Its totient is φ = 1214792396928.

The previous prime is 3644440145651. The next prime is 3644440145677. The reversal of 3644440145652 is 2565410444463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644440145651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1891333 + ... + 3296364.

Almost surely, 2^{3644440145652} is an apocalyptic number.

It is an amenable number.

3644440145652 is an abundant number, since it is smaller than the sum of its proper divisors (4859400422284).

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

3644440145652 is a wasteful number, since it uses less digits than its factorization.

3644440145652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5246247 (or 5246245 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 48.

The spelling of 3644440145652 in words is "three trillion, six hundred forty-four billion, four hundred forty million, one hundred forty-five thousand, six hundred fifty-two".