471681111857 has 2 divisors, whose sum is σ = 471681111858. Its totient is φ = 471681111856.

The previous prime is 471681111851. The next prime is 471681111871. The reversal of 471681111857 is 758111186174.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403789077136 + 67892034721 = 635444^2 + 260561^2 .

It is a cyclic number.

It is not a de Polignac number, because 471681111857 - 2⁴ = 471681111841 is a prime.

It is not a weakly prime, because it can be changed into another prime (471681111851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235840555928 + 235840555929.

It is an arithmetic number, because the mean of its divisors is an integer number (235840555929).

Almost surely, 2^471681111857 is an apocalyptic number.

It is an amenable number.

471681111857 is a deficient number, since it is larger than the sum of its proper divisors (1).

471681111857 is an equidigital number, since it uses as much as digits as its factorization.

471681111857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 50.

The spelling of 471681111857 in words is "four hundred seventy-one billion, six hundred eighty-one million, one hundred eleven thousand, eight hundred fifty-seven".