645833944303 has 2 divisors, whose sum is σ = 645833944304. Its totient is φ = 645833944302.

The previous prime is 645833944253. The next prime is 645833944321. The reversal of 645833944303 is 303449338546.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-645833944303 is a prime.

It is a super-2 number, since 2×645833944303² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (645833944603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322916972151 + 322916972152.

It is an arithmetic number, because the mean of its divisors is an integer number (322916972152).

Almost surely, 2^645833944303 is an apocalyptic number.

645833944303 is a deficient number, since it is larger than the sum of its proper divisors (1).

645833944303 is an equidigital number, since it uses as much as digits as its factorization.

645833944303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11197440, while the sum is 52.

The spelling of 645833944303 in words is "six hundred forty-five billion, eight hundred thirty-three million, nine hundred forty-four thousand, three hundred three".