63256385771 has 2 divisors, whose sum is σ = 63256385772. Its totient is φ = 63256385770.

The previous prime is 63256385659. The next prime is 63256385821. The reversal of 63256385771 is 17758365236.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63256385771 - 2²² = 63252191467 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (63256387771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31628192885 + 31628192886.

It is an arithmetic number, because the mean of its divisors is an integer number (31628192886).

Almost surely, 2^63256385771 is an apocalyptic number.

63256385771 is a deficient number, since it is larger than the sum of its proper divisors (1).

63256385771 is an equidigital number, since it uses as much as digits as its factorization.

63256385771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6350400, while the sum is 53.

The spelling of 63256385771 in words is "sixty-three billion, two hundred fifty-six million, three hundred eighty-five thousand, seven hundred seventy-one".