3644221100156 has 96 divisors (see below), whose sum is σ = 8312561832960. Its totient is φ = 1356578601984.

The previous prime is 3644221100141. The next prime is 3644221100183. The reversal of 3644221100156 is 6510011224463.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30378911 + ... + 30498633.

It is an arithmetic number, because the mean of its divisors is an integer number (86589185760).

Almost surely, 2^{3644221100156} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3644221100156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4156280916480).

3644221100156 is an abundant number, since it is smaller than the sum of its proper divisors (4668340732804).

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

3644221100156 is a wasteful number, since it uses less digits than its factorization.

3644221100156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124683 (or 124681 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 3644221100156 in words is "three trillion, six hundred forty-four billion, two hundred twenty-one million, one hundred thousand, one hundred fifty-six".