863608876643 has 2 divisors, whose sum is σ = 863608876644. Its totient is φ = 863608876642.

The previous prime is 863608876597. The next prime is 863608876693. The reversal of 863608876643 is 346678806368.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 863608876643 - 2¹² = 863608872547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 863608876643.

It is not a weakly prime, because it can be changed into another prime (863608876693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431804438321 + 431804438322.

It is an arithmetic number, because the mean of its divisors is an integer number (431804438322).

Almost surely, 2^863608876643 is an apocalyptic number.

863608876643 is a deficient number, since it is larger than the sum of its proper divisors (1).

863608876643 is an equidigital number, since it uses as much as digits as its factorization.

863608876643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 167215104, while the sum is 65.

The spelling of 863608876643 in words is "eight hundred sixty-three billion, six hundred eight million, eight hundred seventy-six thousand, six hundred forty-three".