263250645613 has 2 divisors, whose sum is σ = 263250645614. Its totient is φ = 263250645612.

The previous prime is 263250645607. The next prime is 263250645629. The reversal of 263250645613 is 316546052362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234036315529 + 29214330084 = 483773^2 + 170922^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263250645613 is a prime.

It is a super-2 number, since 2×263250645613² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 263250645613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263250645653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131625322806 + 131625322807.

It is an arithmetic number, because the mean of its divisors is an integer number (131625322807).

Almost surely, 2^263250645613 is an apocalyptic number.

It is an amenable number.

263250645613 is a deficient number, since it is larger than the sum of its proper divisors (1).

263250645613 is an equidigital number, since it uses as much as digits as its factorization.

263250645613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 43.

Adding to 263250645613 its reverse (316546052362), we get a palindrome (579796697975).

The spelling of 263250645613 in words is "two hundred sixty-three billion, two hundred fifty million, six hundred forty-five thousand, six hundred thirteen".