852638108863 has 2 divisors, whose sum is σ = 852638108864. Its totient is φ = 852638108862.

The previous prime is 852638108837. The next prime is 852638108911. The reversal of 852638108863 is 368801836258.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-852638108863 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 852638108798 and 852638108807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (852638100863) 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, 426319054431 + 426319054432.

It is an arithmetic number, because the mean of its divisors is an integer number (426319054432).

Almost surely, 2^852638108863 is an apocalyptic number.

852638108863 is a deficient number, since it is larger than the sum of its proper divisors (1).

852638108863 is an equidigital number, since it uses as much as digits as its factorization.

852638108863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13271040, while the sum is 58.

The spelling of 852638108863 in words is "eight hundred fifty-two billion, six hundred thirty-eight million, one hundred eight thousand, eight hundred sixty-three".