63857068571 has 2 divisors, whose sum is σ = 63857068572. Its totient is φ = 63857068570.

The previous prime is 63857068553. The next prime is 63857068573. The reversal of 63857068571 is 17586075836.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63857068571 is a prime.

It is a Sophie Germain prime.

Together with 63857068573, 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 (63857068573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31928534285 + 31928534286.

It is an arithmetic number, because the mean of its divisors is an integer number (31928534286).

Almost surely, 2^63857068571 is an apocalyptic number.

63857068571 is a deficient number, since it is larger than the sum of its proper divisors (1).

63857068571 is an equidigital number, since it uses as much as digits as its factorization.

63857068571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 63857068571 in words is "sixty-three billion, eight hundred fifty-seven million, sixty-eight thousand, five hundred seventy-one".