63716946389 has 2 divisors, whose sum is σ = 63716946390. Its totient is φ = 63716946388.

The previous prime is 63716946379. The next prime is 63716946401. The reversal of 63716946389 is 98364961736.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48989182225 + 14727764164 = 221335^2 + 121358^2 .

It is a cyclic number.

It is not a de Polignac number, because 63716946389 - 2¹⁶ = 63716880853 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63716946379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31858473194 + 31858473195.

It is an arithmetic number, because the mean of its divisors is an integer number (31858473195).

Almost surely, 2^63716946389 is an apocalyptic number.

It is an amenable number.

63716946389 is a deficient number, since it is larger than the sum of its proper divisors (1).

63716946389 is an equidigital number, since it uses as much as digits as its factorization.

63716946389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35271936, while the sum is 62.

The spelling of 63716946389 in words is "sixty-three billion, seven hundred sixteen million, nine hundred forty-six thousand, three hundred eighty-nine".