1644301244141 has 2 divisors, whose sum is σ = 1644301244142. Its totient is φ = 1644301244140.

The previous prime is 1644301244123. The next prime is 1644301244177. The reversal of 1644301244141 is 1414421034461.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 879675168100 + 764626076041 = 937910^2 + 874429^2 .

It is a cyclic number.

It is not a de Polignac number, because 1644301244141 - 2¹⁴ = 1644301227757 is a prime.

It is a super-3 number, since 3×1644301244141³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1644301246141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 822150622070 + 822150622071.

It is an arithmetic number, because the mean of its divisors is an integer number (822150622071).

Almost surely, 2^{1644301244141} is an apocalyptic number.

It is an amenable number.

1644301244141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1644301244141 is an equidigital number, since it uses as much as digits as its factorization.

1644301244141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 35.

The spelling of 1644301244141 in words is "one trillion, six hundred forty-four billion, three hundred one million, two hundred forty-four thousand, one hundred forty-one".