643294411763 has 2 divisors, whose sum is σ = 643294411764. Its totient is φ = 643294411762.

The previous prime is 643294411759. The next prime is 643294411897. The reversal of 643294411763 is 367114492346.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 643294411763 - 2² = 643294411759 is a prime.

It is not a weakly prime, because it can be changed into another prime (643294411363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321647205881 + 321647205882.

It is an arithmetic number, because the mean of its divisors is an integer number (321647205882).

Almost surely, 2^643294411763 is an apocalyptic number.

643294411763 is a deficient number, since it is larger than the sum of its proper divisors (1).

643294411763 is an equidigital number, since it uses as much as digits as its factorization.

643294411763 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 50.

The spelling of 643294411763 in words is "six hundred forty-three billion, two hundred ninety-four million, four hundred eleven thousand, seven hundred sixty-three".