2164640343743 has 2 divisors, whose sum is σ = 2164640343744. Its totient is φ = 2164640343742.

The previous prime is 2164640343721. The next prime is 2164640343757. The reversal of 2164640343743 is 3473430464612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2164640343743 - 2¹⁰ = 2164640342719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2164640343763) 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, 1082320171871 + 1082320171872.

It is an arithmetic number, because the mean of its divisors is an integer number (1082320171872).

Almost surely, 2^{2164640343743} is an apocalyptic number.

2164640343743 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164640343743 is an equidigital number, since it uses as much as digits as its factorization.

2164640343743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3483648, while the sum is 47.

The spelling of 2164640343743 in words is "two trillion, one hundred sixty-four billion, six hundred forty million, three hundred forty-three thousand, seven hundred forty-three".