63853580171 has 2 divisors, whose sum is σ = 63853580172. Its totient is φ = 63853580170.

The previous prime is 63853580149. The next prime is 63853580239. The reversal of 63853580171 is 17108535836.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63853580171 is a prime.

It is not a weakly prime, because it can be changed into another prime (63853580471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31926790085 + 31926790086.

It is an arithmetic number, because the mean of its divisors is an integer number (31926790086).

Almost surely, 2^63853580171 is an apocalyptic number.

63853580171 is a deficient number, since it is larger than the sum of its proper divisors (1).

63853580171 is an equidigital number, since it uses as much as digits as its factorization.

63853580171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 63853580171 in words is "sixty-three billion, eight hundred fifty-three million, five hundred eighty thousand, one hundred seventy-one".