263124661361 has 2 divisors, whose sum is σ = 263124661362. Its totient is φ = 263124661360.

The previous prime is 263124661333. The next prime is 263124661363. The reversal of 263124661361 is 163166421362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258043680400 + 5080980961 = 507980^2 + 71281^2 .

It is a cyclic number.

It is not a de Polignac number, because 263124661361 - 2¹⁴ = 263124644977 is a prime.

Together with 263124661363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (263124661363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131562330680 + 131562330681.

It is an arithmetic number, because the mean of its divisors is an integer number (131562330681).

Almost surely, 2^263124661361 is an apocalyptic number.

It is an amenable number.

263124661361 is a deficient number, since it is larger than the sum of its proper divisors (1).

263124661361 is an equidigital number, since it uses as much as digits as its factorization.

263124661361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 41.

The spelling of 263124661361 in words is "two hundred sixty-three billion, one hundred twenty-four million, six hundred sixty-one thousand, three hundred sixty-one".