63778816111 has 2 divisors, whose sum is σ = 63778816112. Its totient is φ = 63778816110.

The previous prime is 63778816103. The next prime is 63778816133. The reversal of 63778816111 is 11161887736.

63778816111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63778816111 - 2³ = 63778816103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63778816141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31889408055 + 31889408056.

It is an arithmetic number, because the mean of its divisors is an integer number (31889408056).

Almost surely, 2^63778816111 is an apocalyptic number.

63778816111 is a deficient number, since it is larger than the sum of its proper divisors (1).

63778816111 is an equidigital number, since it uses as much as digits as its factorization.

63778816111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 49.

The spelling of 63778816111 in words is "sixty-three billion, seven hundred seventy-eight million, eight hundred sixteen thousand, one hundred eleven".