863045617361 has 2 divisors, whose sum is σ = 863045617362. Its totient is φ = 863045617360.

The previous prime is 863045617309. The next prime is 863045617363. The reversal of 863045617361 is 163716540368.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 706534389136 + 156511228225 = 840556^2 + 395615^2 .

It is a cyclic number.

It is not a de Polignac number, because 863045617361 - 2¹⁰ = 863045616337 is a prime.

Together with 863045617363, 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 (863045617363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431522808680 + 431522808681.

It is an arithmetic number, because the mean of its divisors is an integer number (431522808681).

Almost surely, 2^863045617361 is an apocalyptic number.

It is an amenable number.

863045617361 is a deficient number, since it is larger than the sum of its proper divisors (1).

863045617361 is an equidigital number, since it uses as much as digits as its factorization.

863045617361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 863045617361 in words is "eight hundred sixty-three billion, forty-five million, six hundred seventeen thousand, three hundred sixty-one".