501444266243 has 2 divisors, whose sum is σ = 501444266244. Its totient is φ = 501444266242.

The previous prime is 501444266207. The next prime is 501444266261. The reversal of 501444266243 is 342662444105.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 501444266243 - 2¹⁸ = 501444004099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 501444266243.

It is not a weakly prime, because it can be changed into another prime (501444266203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250722133121 + 250722133122.

It is an arithmetic number, because the mean of its divisors is an integer number (250722133122).

Almost surely, 2^501444266243 is an apocalyptic number.

501444266243 is a deficient number, since it is larger than the sum of its proper divisors (1).

501444266243 is an equidigital number, since it uses as much as digits as its factorization.

501444266243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 41.

The spelling of 501444266243 in words is "five hundred one billion, four hundred forty-four million, two hundred sixty-six thousand, two hundred forty-three".