1644232354343 has 2 divisors, whose sum is σ = 1644232354344. Its totient is φ = 1644232354342.

The previous prime is 1644232354337. The next prime is 1644232354363. The reversal of 1644232354343 is 3434532324461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1644232354343 - 2⁶ = 1644232354279 is a prime.

It is a super-3 number, since 3×1644232354343³ (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1644232354294 and 1644232354303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1644232354363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 822116177171 + 822116177172.

It is an arithmetic number, because the mean of its divisors is an integer number (822116177172).

Almost surely, 2^{1644232354343} is an apocalyptic number.

1644232354343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1644232354343 is an equidigital number, since it uses as much as digits as its factorization.

1644232354343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 44.

The spelling of 1644232354343 in words is "one trillion, six hundred forty-four billion, two hundred thirty-two million, three hundred fifty-four thousand, three hundred forty-three".