263796787729 has 2 divisors, whose sum is σ = 263796787730. Its totient is φ = 263796787728.

The previous prime is 263796787697. The next prime is 263796787783. The reversal of 263796787729 is 927787697362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194917835025 + 68878952704 = 441495^2 + 262448^2 .

It is a cyclic number.

It is not a de Polignac number, because 263796787729 - 2⁵ = 263796787697 is a prime.

It is a super-2 number, since 2×263796787729² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (263796787229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131898393864 + 131898393865.

It is an arithmetic number, because the mean of its divisors is an integer number (131898393865).

Almost surely, 2^263796787729 is an apocalyptic number.

It is an amenable number.

263796787729 is a deficient number, since it is larger than the sum of its proper divisors (1).

263796787729 is an equidigital number, since it uses as much as digits as its factorization.

263796787729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672126336, while the sum is 73.

The spelling of 263796787729 in words is "two hundred sixty-three billion, seven hundred ninety-six million, seven hundred eighty-seven thousand, seven hundred twenty-nine".