2146445405773 has 2 divisors, whose sum is σ = 2146445405774. Its totient is φ = 2146445405772.

The previous prime is 2146445405771. The next prime is 2146445405777. The reversal of 2146445405773 is 3775045446412.

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., 1786825705284 + 359619700489 = 1336722^2 + 599683^2 .

It is a cyclic number.

It is not a de Polignac number, because 2146445405773 - 2¹ = 2146445405771 is a prime.

Together with 2146445405771, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2146445405773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2146445405771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1073222702886 + 1073222702887.

It is an arithmetic number, because the mean of its divisors is an integer number (1073222702887).

Almost surely, 2^{2146445405773} is an apocalyptic number.

It is an amenable number.

2146445405773 is a deficient number, since it is larger than the sum of its proper divisors (1).

2146445405773 is an equidigital number, since it uses as much as digits as its factorization.

2146445405773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11289600, while the sum is 52.

The spelling of 2146445405773 in words is "two trillion, one hundred forty-six billion, four hundred forty-five million, four hundred five thousand, seven hundred seventy-three".