641327265923 has 2 divisors, whose sum is σ = 641327265924. Its totient is φ = 641327265922.

The previous prime is 641327265883. The next prime is 641327266001. The reversal of 641327265923 is 329562723146.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 641327265923 - 2¹⁶ = 641327200387 is a prime.

It is a super-2 number, since 2×641327265923² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (641327265223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320663632961 + 320663632962.

It is an arithmetic number, because the mean of its divisors is an integer number (320663632962).

Almost surely, 2^641327265923 is an apocalyptic number.

641327265923 is a deficient number, since it is larger than the sum of its proper divisors (1).

641327265923 is an equidigital number, since it uses as much as digits as its factorization.

641327265923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 50.

The spelling of 641327265923 in words is "six hundred forty-one billion, three hundred twenty-seven million, two hundred sixty-five thousand, nine hundred twenty-three".