645112645267 has 2 divisors, whose sum is σ = 645112645268. Its totient is φ = 645112645266.

The previous prime is 645112645231. The next prime is 645112645273. The reversal of 645112645267 is 762546211546.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 645112645267 - 2⁷ = 645112645139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 645112645267.

It is not a weakly prime, because it can be changed into another prime (645112645207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322556322633 + 322556322634.

It is an arithmetic number, because the mean of its divisors is an integer number (322556322634).

Almost surely, 2^645112645267 is an apocalyptic number.

645112645267 is a deficient number, since it is larger than the sum of its proper divisors (1).

645112645267 is an equidigital number, since it uses as much as digits as its factorization.

645112645267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2419200, while the sum is 49.

The spelling of 645112645267 in words is "six hundred forty-five billion, one hundred twelve million, six hundred forty-five thousand, two hundred sixty-seven".