263794843673 has 2 divisors, whose sum is σ = 263794843674. Its totient is φ = 263794843672.

The previous prime is 263794843639. The next prime is 263794843771. The reversal of 263794843673 is 376348497362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255744626944 + 8050216729 = 505712^2 + 89723^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263794843673 is a prime.

It is not a weakly prime, because it can be changed into another prime (263794843073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131897421836 + 131897421837.

It is an arithmetic number, because the mean of its divisors is an integer number (131897421837).

Almost surely, 2^263794843673 is an apocalyptic number.

It is an amenable number.

263794843673 is a deficient number, since it is larger than the sum of its proper divisors (1).

263794843673 is an equidigital number, since it uses as much as digits as its factorization.

263794843673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 109734912, while the sum is 62.

The spelling of 263794843673 in words is "two hundred sixty-three billion, seven hundred ninety-four million, eight hundred forty-three thousand, six hundred seventy-three".