645416500343 has 2 divisors, whose sum is σ = 645416500344. Its totient is φ = 645416500342.

The previous prime is 645416500307. The next prime is 645416500361. The reversal of 645416500343 is 343005614546.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 645416500343 - 2²⁴ = 645399723127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 645416500343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (645416503343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322708250171 + 322708250172.

It is an arithmetic number, because the mean of its divisors is an integer number (322708250172).

Almost surely, 2^645416500343 is an apocalyptic number.

645416500343 is a deficient number, since it is larger than the sum of its proper divisors (1).

645416500343 is an equidigital number, since it uses as much as digits as its factorization.

645416500343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 645416500343 in words is "six hundred forty-five billion, four hundred sixteen million, five hundred thousand, three hundred forty-three".