63428686926893 has 2 divisors, whose sum is σ = 63428686926894. Its totient is φ = 63428686926892.

The previous prime is 63428686926863. The next prime is 63428686926977. The reversal of 63428686926893 is 39862968682436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57947080840804 + 5481606086089 = 7612298^2 + 2341283^2 .

It is a cyclic number.

It is not a de Polignac number, because 63428686926893 - 2⁸ = 63428686926637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63428686926863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31714343463446 + 31714343463447.

It is an arithmetic number, because the mean of its divisors is an integer number (31714343463447).

Almost surely, 2^{63428686926893} is an apocalyptic number.

It is an amenable number.

63428686926893 is a deficient number, since it is larger than the sum of its proper divisors (1).

63428686926893 is an equidigital number, since it uses as much as digits as its factorization.

63428686926893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7739670528, while the sum is 80.

The spelling of 63428686926893 in words is "sixty-three trillion, four hundred twenty-eight billion, six hundred eighty-six million, nine hundred twenty-six thousand, eight hundred ninety-three".